The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:2962 advisory.

    Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware     platforms. The virt:rhel module contains packages which provide user-space components used to run virtual     machines using KVM. The packages also provide APIs for managing and interacting with the virtualized     systems.

    Security Fix(es):

    * QEMU: VNC: infinite loop in inflate_buffer() leads to denial of service (CVE-2023-3255)

    * QEMU: improper IDE controller reset can lead to MBR overwrite (CVE-2023-5088)

    * QEMU: VNC: NULL pointer dereference in qemu_clipboard_request() (CVE-2023-6683)

    * QEMU: virtio-net: stack buffer overflow in virtio_net_flush_tx() (CVE-2023-6693)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.10 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2024-7897:02 advisory.

    * QEMU: e1000e: heap use-after-free in e1000e_write_packet_to_guest() (CVE-2023-3019)
      * QEMU: VNC: infinite loop in inflate_buffer() leads to denial of service (CVE-2023-3255)
      * QEMU: improper IDE controller reset can lead to MBR overwrite (CVE-2023-5088)
      * QEMU: VNC: NULL pointer dereference in qemu_clipboard_request() (CVE-2023-6683)
      * QEMU: am53c974: denial of service due to division by zero (CVE-2023-42467)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-2135 advisory.

    - Resolves: RHEL-19629       (CVE-2023-6683 qemu-kvm: QEMU: VNC: NULL pointer dereference in qemu_clipboard_request() [rhel-9])
    - Resolves: RHEL-2828       (CVE-2023-42467 qemu-kvm: qemu: denial of service due to division by zero [rhel-9])
    - Resolves: RHEL-516       (CVE-2023-2680 qemu-kvm: QEMU: hcd-ehci: DMA reentrancy issue (incomplete fix for CVE-2021-3750)     [rhel-9])
    - Resolves: bz#2149108       (CVE-2022-4172 qemu-kvm: QEMU: ACPI ERST: memory corruption issues in read_erst_record and     write_erst_record [rhel-9])
    - Resolves: bz#1951522       (CVE-2021-3507 qemu-kvm: QEMU: fdc: heap buffer overflow in DMA read data transfers [rhel-9.0])

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-2962 advisory.

    - Fix CVE-2022-2211 Denial of Service in --key parameter       resolves: rhbz#2101280
    - Fixes: CVE-2022-40284
    - Fixes: CVE-2021-46790, CVE-2022-30783, CVE-2022-30784, CVE-2022-30785,       CVE-2022-30786, CVE-2022-30787, CVE-2022-30788, CVE-2022-30789       resolves: rhbz#2127240 rhbz#2127248       (also: 2127233 2127234 2127241 2127249 2127255 2127256 2127262 2127263)
    - Fixes: CVE-2021-33285, CVE-2021-33286, CVE-2021-33287, CVE-2021-33289,       CVE-2021-35266, CVE-2021-35267, CVE-2021-35268, CVE-2021-35269,       CVE-2021-39251, CVE-2021-39252, CVE-2021-39253, CVE-2021-39254       resolves: rhbz#2004490
    - Fix for CVE-2019-9755       (heap-based buffer overflow leads to local root privilege escalation)       resolves: rhbz#1698503
    - Fix CVE-2022-0485: Fail nbdcopy if NBD read or write fails       resolves: rhbz#2045718
    - Contains fix for NBD Protocol Downgrade Attack (CVE-2019-14842).
    - Resolves: RHEL-19628       (CVE-2023-6683 virt:rhel/qemu-kvm: QEMU: VNC: NULL pointer dereference in qemu_clipboard_request()     [rhel-8])
    - Resolves: RHEL-19496       (CVE-2023-6693 virt:rhel/qemu-kvm: QEMU: virtio-net: stack buffer overflow in virtio_net_flush_tx()     [rhel-8])
    - Resolves: RHEL-15437       (CVE-2023-5088 virt:rhel/qemu-kvm: QEMU: improper IDE controller reset can lead to MBR overwrite     [rhel-8])
    - Resolves: RHEL-7309       (CVE-2023-3019 virt:rhel/qemu-kvm: QEMU: e1000e: heap use-after-free in e1000e_write_packet_to_guest()     [rhel-8])

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4144 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4144-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/               Santiago Ruano Rincn     April 30, 2025                                https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : qemu     Version        : 1:5.2+dfsg-11+deb11u4     CVE ID         : CVE-2023-1544 CVE-2023-3019 CVE-2023-5088 CVE-2023-6693                      CVE-2024-3447     Debian Bug     : 1034179 1041102 1068821

    Multiple security issues were discovered in QEMU, a fast processor     emulator, which could result in denial of service or information leak.

    CVE-2023-1544

        Potential out-of-bounds read and crash via VMWare's paravirtual RDMA device.

    CVE-2023-3019

        Use-after-free error in the e1000e NIC emulation.

    CVE-2023-5088

        IDE guest I/O operation addressed to an arbitrary disk offset may         potentially allow to overwrite the VM's boot code.

    CVE-2023-6693

        Stack based buffer overflow in the virtio-net device emulation that may be         exploited to cause information leak.

    CVE-2024-3447

        Heap-based buffer overflow in SDHCI device emulation.

    For Debian 11 bullseye, these problems have been fixed in version     1:5.2+dfsg-11+deb11u4.

    We recommend that you upgrade your qemu packages.

    For the detailed security status of qemu please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/qemu

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8412-1 advisory.

    Felipe Franciosi, Raphael Norwitz, and Peter Turschmid discovered that the iSCSI block driver in QEMU     incorrectly handled certain responses from an iSCSI server. A remote attacker could possibly use this     issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This     issue only affected Ubuntu 14.04 LTS. (CVE-2020-1711)

    It was discovered that the iSCSI block driver in QEMU incorrectly handled certain memory operations,     leading to a heap-based buffer over-read. An attacker could possibly use this issue to expose sensitive     information from the host. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-11947)

    Ziming Zhang discovered that the SM501 display driver in QEMU contained an integer overflow. A local     attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This     issue only affected Ubuntu 14.04 LTS. (CVE-2020-12829)

    Gaoning Pan and Xingwei Li discovered that the USB xHCI controller implementation in QEMU contained an     infinite loop. An attacker inside the guest could possibly use this issue to cause QEMU to hang, resulting     in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS.
    (CVE-2020-14394)

    Lei Sun discovered that QEMU incorrectly handled certain MemoryRegionOps objects, leading to a NULL     pointer dereference. An attacker inside the guest could possibly use this issue to cause QEMU to crash,     resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
    (CVE-2020-15469)

    Alexander Bulekov discovered that the e1000e network device implementation in QEMU contained a use-after-     free. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a     denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-15859)

    Ziming Zhang discovered that the XGMAC Ethernet controller in QEMU contained a buffer overflow. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-15863)

    Alexander Bulekov discovered that the SDHCI device emulation in QEMU contained a heap-based buffer     overflow. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in     a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS.
    (CVE-2020-17380)

    Sergej Schumilo, Cornelius Aschermann, and Simon Wrner discovered that the USB xHCI controller     implementation in QEMU did not check a return value, leading to a use-after-free. An attacker inside the     guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue     only affected Ubuntu 14.04 LTS. (CVE-2020-25084)

    Gaoning Pan, Yongkang Jia, and Yi Ren discovered that the USB OHCI controller implementation in QEMU     contained a stack-based buffer over-read. An attacker inside the guest could possibly use this issue to     cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS.
    (CVE-2020-25624)

    It was discovered that the USB OHCI controller implementation in QEMU contained an infinite loop. An     attacker inside the guest could possibly use this issue to cause QEMU to consume resources, resulting in a     denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-25625)

    Cheolwoo Myung discovered that the USB EHCI emulation in QEMU did not handle DMA memory map failures,     leading to a reachable assertion. An attacker inside the guest could possibly use this issue to cause QEMU     to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-25723)

    Gaoning Pan discovered that the network device emulation in QEMU could be made to trigger an assertion     failure when processing packets that lacked a valid layer 3 protocol. An attacker inside the guest could     possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected     Ubuntu 14.04 LTS. (CVE-2020-27617)

    Wenxiang Qian discovered that the ATAPI emulation in QEMU did not properly validate a buffer index,     leading to an out-of-bounds read. An attacker inside the guest could possibly use this issue to expose     sensitive information or cause QEMU to crash, resulting in a denial of service. This issue only affected     Ubuntu 14.04 LTS. (CVE-2020-29443)

    Cheolwoo Myung discovered that the ESP SCSI emulation in QEMU contained a NULL pointer dereference. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2020-35504)

    Cheolwoo Myung discovered that the am53c974 SCSI host bus adapter emulation in QEMU contained a NULL     pointer dereference. An attacker inside the guest could possibly use this issue to cause QEMU to crash,     resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
    (CVE-2020-35505)

    It was discovered that the SDHCI controller emulation in QEMU contained out-of-bounds read and write     issues. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a     denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and     Ubuntu 16.04 LTS. (CVE-2021-3409)

    It was discovered that several network device emulations in QEMU contained an infinite loop when operating     in loopback mode. An attacker inside the guest could possibly use this issue to cause QEMU to crash,     resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
    (CVE-2021-3416)

    Alexander Bulekov discovered that the floppy disk emulation in QEMU contained a heap-based buffer     overflow. An attacker inside the guest could possibly use this issue to expose sensitive information or     cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and     Ubuntu 16.04 LTS. (CVE-2021-3507)

    Remy Noel discovered that the USB redirector device emulation in QEMU performed an unbounded stack     allocation when combining USB packets. An attacker inside the guest could possibly use this issue to cause     QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu     16.04 LTS. (CVE-2021-3527)

    It was discovered that the QXL display device emulation in QEMU contained an integer overflow, leading to     a heap-based buffer overflow. An attacker inside the guest could possibly use this issue to cause QEMU to     crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected     Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-4206)

    It was discovered that the QXL display device emulation in QEMU performed a double fetch of guest-     controlled values, leading to a heap-based buffer overflow. An attacker inside the guest could possibly     use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary     code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-4207)

    It was discovered that the 9pfs server implementation in QEMU contained a race condition, leading to a     use-after-free. A malicious 9p client could possibly use this issue to escalate privileges. This issue     only affected Ubuntu 14.04 LTS. (CVE-2021-20181)

    Gaoning Pan discovered that the floppy disk emulation in QEMU contained a NULL pointer dereference. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-20196)

    Gaoning Pan discovered that the vmxnet3 network device emulation in QEMU contained an integer overflow. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-20203)

    It was discovered that the ARM Generic Interrupt Controller emulation in QEMU contained an out-of-bounds     heap access. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting     in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-20221)

    Alexander Bulekov, Cheolwoo Myung, Sergej Schumilo, Cornelius Aschermann, and Simon Wrner discovered     that the e1000 network device emulation in QEMU contained an infinite loop. An attacker inside the guest     could possibly use this issue to cause QEMU to consume resources, resulting in a denial of service. This     issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-20257)

    It was discovered that the 9p passthrough file system implementation in QEMU did not prevent opening     special files on the host. A malicious guest could possibly use this issue to escape the exported 9p tree.
    This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. (CVE-2023-2861)

    It was discovered that the virtio crypto device emulation in QEMU did not properly validate certain buffer     lengths, leading to a heap buffer overflow. An attacker inside the guest could possibly use this issue to     cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only     affected Ubuntu 18.04 LTS. (CVE-2023-3180)

    It was discovered that the built-in VNC server in QEMU contained a NULL pointer dereference when cleaning     up a connection that failed during the handshake. A remote attacker could possibly use this issue to cause     QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS.
    (CVE-2023-3354)

    It was discovered that QEMU could incorrectly direct a guest I/O operation to disk offset 0 instead of the     intended offset. An attacker inside the guest could possibly use this issue to read or overwrite sensitive     data, potentially gaining control of the host. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04     LTS, and Ubuntu 18.04 LTS. (CVE-2023-5088)

    It was discovered that several virtio device emulations in QEMU did not properly guard against DMA     reentrancy, leading to a double free. An attacker inside the guest could possibly use this issue to cause     QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2024-3446)

    It was discovered that the SDHCI device emulation in QEMU contained a heap- based buffer overflow. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. (CVE-2024-3447)

    It was discovered that the QEMU disk image utility (qemu-img) did not properly handle certain crafted     image files. An attacker could possibly use this issue to cause qemu-img to consume excessive resources or     access an unintended external file, resulting in a denial of service. This issue only affected Ubuntu     20.04 LTS. (CVE-2024-4467)

    Cyrille Chatras discovered that the LSI53C895A SCSI Host Bus Adapter emulation in QEMU contained a use-     after-free. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting     in a denial of service, or possibly execute arbitrary code. (CVE-2024-6519)

    It was discovered that the NBD server in QEMU contained an improper synchronization issue during socket     closure. A remote attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. (CVE-2024-7409)

    It was discovered that the USB emulation in QEMU contained a reachable assertion. An attacker inside the     guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service.
    (CVE-2024-8354)

    It was discovered that QEMU incorrectly handled resources during the VNC WebSocket handshake, leading to a     use-after-free. A remote attacker could possibly use this issue to cause QEMU to crash, resulting in a     denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2025-11234)

    It was discovered that QEMU could be made to read out of bounds when reading VMDK images. An attacker     could possibly use this issue to expose sensitive information or cause QEMU to crash, resulting in a     denial of service. (CVE-2026-2243)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.04 / 23.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6567-1 advisory.

    Gaoning Pan and Xingwei Li discovered that QEMU incorrectly handled the USB xHCI controller device. A     privileged guest attacker could possibly use this issue to cause QEMU to crash, leading to a denial of     service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2020-14394)

    It was discovered that QEMU incorrectly handled the TCG Accelerator. A local attacker could use this issue     to cause QEMU to crash, leading to a denial of service, or possibly execute arbitrary code and esclate     privileges. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-24165)

    It was discovered that QEMU incorrectly handled the Intel HD audio device. A malicious guest attacker     could use this issue to cause QEMU to crash, leading to a denial of service. This issue only affected     Ubuntu 22.04 LTS. (CVE-2021-3611)

    It was discovered that QEMU incorrectly handled the ATI VGA device. A malicious guest attacker could use     this issue to cause QEMU to crash, leading to a denial of service. This issue only affected Ubuntu 20.04     LTS. (CVE-2021-3638)

    It was discovered that QEMU incorrectly handled the VMWare paravirtual RDMA device. A malicious guest     attacker could use this issue to cause QEMU to crash, leading to a denial of service. (CVE-2023-1544)

    It was discovered that QEMU incorrectly handled the 9p passthrough filesystem. A malicious guest attacker     could possibly use this issue to open special files and escape the exported 9p tree. This issue only     affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-2861)

    It was discovered that QEMU incorrectly handled the virtual crypto device. A malicious guest attacker     could use this issue to cause QEMU to crash, leading to a denial of service, or possibly execute arbitrary     code. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-3180)

    It was discovered that QEMU incorrectly handled the built-in VNC server. A remote authenticated attacker     could possibly use this issue to cause QEMU to stop responding, resulting in a denial of service. This     issue only affected Ubuntu 22.04 LTS and Ubuntu 23.04. (CVE-2023-3255)

    It was discovered that QEMU incorrectly handled net device hot-unplugging. A malicious guest attacker     could use this issue to cause QEMU to crash, leading to a denial of service. This issue only affected     Ubuntu 22.04 LTS and Ubuntu 23.04. (CVE-2023-3301)

    It was discovered that QEMU incorrectly handled the built-in VNC server. A remote attacker could possibly     use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu     20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-3354)

    It was discovered that QEMU incorrectly handled NVME devices. A malicious guest attacker could use this     issue to cause QEMU to crash, leading to a denial of service. This issue only affected Ubuntu 23.10.
    (CVE-2023-40360)

    It was discovered that QEMU incorrectly handled NVME devices. A malicious guest attacker could use this     issue to cause QEMU to crash, leading to a denial of service, or possibly obtain sensitive information.
    This issue only affected Ubuntu 23.10. (CVE-2023-4135)

    It was discovered that QEMU incorrectly handled SCSI devices. A malicious guest attacker could use this     issue to cause QEMU to crash, leading to a denial of service. This issue only affected Ubuntu 23.04 and     Ubuntu 23.10. (CVE-2023-42467)

    It was discovered that QEMU incorrectly handled certain disk offsets. A malicious guest attacker could     possibly use this issue to gain control of the host in certain nested virtualization scenarios.
    (CVE-2023-5088)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3759 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3759-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                          Adrian Bunk     March 11, 2024                                https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : qemu     Version        : 1:3.1+dfsg-8+deb10u12     CVE ID         : CVE-2023-2861 CVE-2023-3354 CVE-2023-5088

    Multiple vulnerabilities have been fixed in the machine emulator     and virtualizer QEMU.

    CVE-2023-2861

        9pfs did not prohibit opening special files on the host side

    CVE-2023-3354

        remote unauthenticated clients could cause denial of service in VNC server

    CVE-2023-5088

        IDE guest I/O operation addressed to an arbitrary disk offset might         get targeted to offset 0 instead

    For Debian 10 buster, these problems have been fixed in version     1:3.1+dfsg-8+deb10u12.

    We recommend that you upgrade your qemu packages.

    For the detailed security status of qemu please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/qemu

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-12276 advisory.

    - Fixes: CVE-2022-40284
    - Fix off-by-one error in udevListInterfacesByStatus (Martin Kletzander) [Orabug: 36364464]     {CVE-2024-1441}

    libvirt-dbus     libvirt-python
    - ui/clipboard: add asserts for update and request (Fiona Ebner) [Orabug: 36323175] {CVE-2023-6683}
    - ui/clipboard: mark type as not available when there is no data (Fiona Ebner) [Orabug: 36323175]     {CVE-2023-6683}
    - virtio-net: correctly copy vnet header when flushing TX (Jason Wang) [Orabug: 36154459] {CVE-2023-6693}
    - esp: restrict non-DMA transfer length to that of available data (Mark Cave-Ayland) [Orabug: 36322141]     {CVE-2024-24474}
    - net: Update MemReentrancyGuard for NIC (Akihiko Odaki) [Orabug: 35644197] {CVE-2023-3019}
    - net: Provide MemReentrancyGuard * to qemu_new_nic() (Akihiko Odaki) [Orabug: 35644197] {CVE-2023-3019}
    - lsi53c895a: disable reentrancy detection for MMIO region, too (Thomas Huth) [Orabug: 33774027]     {CVE-2021-3750}
    - memory: stricter checks prior to unsetting engaged_in_io (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - async: avoid use-after-free on re-entrancy guard (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - apic: disable reentrancy detection for apic-msi (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - raven: disable reentrancy detection for iomem (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - bcm2835_property: disable reentrancy detection for iomem (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - lsi53c895a: disable reentrancy detection for script RAM (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - hw: replace most qemu_bh_new calls with qemu_bh_new_guarded (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - checkpatch: add qemu_bh_new/aio_bh_new checks (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - async: Add an optional reentrancy guard to the BH API (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - memory: prevent dma-reentracy issues (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - hw/scsi/scsi-disk: Disallow block sizes smaller than 512 [CVE-2023-42467] (Thomas Huth) [Orabug:
    35808564] {CVE-2023-42467}
    - tests/qtest: ahci-test: add test exposing reset issue with pending callback (Fiona Ebner) [Orabug:
    35977245] {CVE-2023-5088}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-12407 advisory.

    - ui/clipboard: add asserts for update and request (Fiona Ebner) [Orabug: 36323175] {CVE-2023-6683}
    - ui/clipboard: mark type as not available when there is no data (Fiona Ebner) [Orabug: 36323175]     {CVE-2023-6683}
    - virtio-net: correctly copy vnet header when flushing TX (Jason Wang) [Orabug: 36154459] {CVE-2023-6693}
    - esp: restrict non-DMA transfer length to that of available data (Mark Cave-Ayland) [Orabug: 36322141]     {CVE-2024-24474}
    - net: Update MemReentrancyGuard for NIC (Akihiko Odaki) [Orabug: 35644197] {CVE-2023-3019}
    - net: Provide MemReentrancyGuard * to qemu_new_nic() (Akihiko Odaki) [Orabug: 35644197] {CVE-2023-3019}
    - lsi53c895a: disable reentrancy detection for MMIO region, too (Thomas Huth) [Orabug: 33774027]     {CVE-2021-3750}
    - memory: stricter checks prior to unsetting engaged_in_io (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - async: avoid use-after-free on re-entrancy guard (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - apic: disable reentrancy detection for apic-msi (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - raven: disable reentrancy detection for iomem (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - bcm2835_property: disable reentrancy detection for iomem (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - lsi53c895a: disable reentrancy detection for script RAM (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - hw: replace most qemu_bh_new calls with qemu_bh_new_guarded (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - checkpatch: add qemu_bh_new/aio_bh_new checks (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - async: Add an optional reentrancy guard to the BH API (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - memory: prevent dma-reentracy issues (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - hw/scsi/scsi-disk: Disallow block sizes smaller than 512 [CVE-2023-42467] (Thomas Huth) [Orabug:
    35808564] {CVE-2023-42467}
    - tests/qtest: ahci-test: add test exposing reset issue with pending callback (Fiona Ebner) [Orabug:
    35977245] {CVE-2023-5088}
    - hw/ide: reset: cancel async DMA operation before resetting state (Fiona Ebner) [Orabug: 35977245]     {CVE-2023-5088}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2024:0869 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2023-5088:
    A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be     targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for     example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor     to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.

    CVE-2023-40360:
    A flaw was found in QEMU. The async nature of hot-unplug enables a race scenario where the net device     backend is cleared before the virtio-net pci frontend has been unplugged. A malicious guest could use this     time window to trigger an assertion and cause a denial of service.

    CVE-2023-3180:
    QEMU through 8.0.4 accesses a NULL pointer in nvme_directive_receive in hw/nvme/ctrl.c because there is no     check for whether an endurance group is configured before checking whether Flexible Data Placement is     enabled.

    CVE-2023-42467:
    A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does     not validate an offset provided by the guest before computing a host heap pointer, which is used for     copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.

    CVE-2023-3354:
    A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks     whether the current number of connections crosses a certain threshold and if so, cleans up the previous     connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the     connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated     client to cause a denial of service.

    CVE-2023-3301:
    A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. A wrong exit     condition may lead to an infinite loop when inflating an attacker controlled zlib buffer in the     `inflate_buffer` function. This could allow a remote authenticated client who is able to send a clipboard     to the VNC server to trigger a denial of service.

    CVE-2023-4135:
    A flaw was found in the QEMU virtual crypto device while handling data encryption/decryption requests in     virtio_crypto_handle_sym_req. There is no check for the value of `src_len` and `dst_len` in     virtio_crypto_sym_op_helper, potentially leading to a heap buffer overflow when the two values differ.

    CVE-2023-3255:
    QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in hw/scsi/scsi-disk.c because     scsi_disk_emulate_mode_select does not prevent s->qdev.blocksize from being 256. This stops QEMU and the     guest immediately.

    CVE-2021-3750:
    A DMA reentrancy issue was found in the USB EHCI controller emulation of QEMU. EHCI does not verify if the     Buffer Pointer overlaps with its MMIO region when it transfers the USB packets. Crafted content may be     written to the controller/'s registers and trigger undesirable actions (such as reset) while the device is     still transferring packets. This can ultimately lead to a use-after-free issue. A malicious guest could     use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or     potentially execute arbitrary code within the context of the QEMU process on the host. This flaw affects     QEMU versions before 7.0.0.

    CVE-2021-3929:
    A DMA reentrancy issue was found in the NVM Express Controller (NVME) emulation in QEMU. This CVE is     similar to CVE-2021-3750 and, just like it, when the reentrancy write triggers the reset function     nvme_ctrl_reset(), data structs will be freed leading to a use-after-free issue. A malicious guest could     use this flaw to crash the QEMU process on the host, resulting in a denial of service condition or,     potentially, executing arbitrary code within the context of the QEMU process on the host.

    CVE-2021-4158:
    A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within     the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service     condition.

    CVE-2021-4206:
    A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc()     function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer     overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on the host or     potentially execute arbitrary code within the context of the QEMU process.

    CVE-2021-4207:
    A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values     `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object     followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw     to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU     process.

    CVE-2022-0358:
    A flaw was found in the QEMU virtio-fs shared file system daemon (virtiofsd) implementation. This flaw is     strictly related to CVE-2018-13405. A local guest user can create files in the directories shared by     virtio-fs with unintended group ownership in a scenario where a directory is SGID to a certain group and     is writable by a user who is not a member of the group. This could allow a malicious unprivileged user     inside the guest to gain access to resources accessible to the root group, potentially escalating their     privileges within the guest. A malicious local user in the host might also leverage this unexpected     executable file created by the guest to escalate their privileges on the host system.

    CVE-2022-2962:
    A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the     rx/tx descriptor or copies the rx/tx frame, it doesn/'t check whether the destination address is its own     MMIO address. This can cause the device to trigger MMIO handlers multiple times, possibly leading to a     stack or heap overflow. A malicious guest could use this flaw to crash the QEMU process on the host,     resulting in a denial of service condition.

    CVE-2022-3165:
    An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the     extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially     crafted payload message, resulting in a denial of service.

    CVE-2022-35414:
    ** DISPUTED ** softmmu/physmem.c in QEMU through 7.0.0 can perform an uninitialized read on the     translate_fail path, leading to an io_readx or io_writex crash. NOTE: a third party states that the Non-     virtualization Use Case in the qemu.org reference applies here, i.e., Bugs affecting the non-     virtualization use case are not considered security bugs at this time.

    CVE-2022-3872:
    An off-by-one read/write issue was found in the SDHCI device of QEMU. It occurs when reading/writing the     Buffer Data Port Register in sdhci_read_dataport and sdhci_write_dataport, respectively, if data_count ==     block_size. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a     denial of service condition.

    CVE-2022-4144:
    An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt()     function does not check the size of the structure pointed to by the guest physical address, potentially     reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to     crash the QEMU process on the host causing a denial of service condition.

    CVE-2023-1544:
    A flaw was found in the QEMU implementation of VMWare/'s paravirtual RDMA device. This flaw allows a     crafted guest driver to allocate and initialize a huge number of page tables to be used as a ring of     descriptors for CQ and async events, potentially leading to an out-of-bounds read and crash of QEMU.

    CVE-2023-6683:
    A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The     qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the     chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a     malicious authenticated VNC client to crash QEMU and trigger a denial of service.

    CVE-2023-6693:
    A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing     TX in the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and     VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables     allocated on the stack. Specifically, the `out_sg` variable could be used to read a part of process memory     and send it to the wire, causing an information leak.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be     targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for     example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor     to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.
    (CVE-2023-5088)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2024:2135 advisory.

  - A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in     QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a     denial of service. (CVE-2023-3019)

  - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. A wrong exit     condition may lead to an infinite loop when inflating an attacker controlled zlib buffer in the     `inflate_buffer` function. This could allow a remote authenticated client who is able to send a clipboard     to the VNC server to trigger a denial of service. (CVE-2023-3255)

  - QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in hw/scsi/scsi-disk.c because     scsi_disk_emulate_mode_select does not prevent s->qdev.blocksize from being 256. This stops QEMU and the     guest immediately. (CVE-2023-42467)

  - A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be     targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for     example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor     to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.
    (CVE-2023-5088)

  - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The     qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the     chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a     malicious authenticated VNC client to crash QEMU and trigger a denial of service. (CVE-2023-6683)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
197771	RHEL 8 : virt:rhel and virt-devel:rhel (RHSA-2024:2962)	Nessus	Red Hat Local Security Checks	2024/5/23	2025/4/29	high
293486	MiracleLinux 9 : qemu-kvm-8.2.0-11.el9 (AXSA:2024-7897:02)	Nessus	Miracle Linux Local Security Checks	2026/1/20	2026/1/20	high
195037	Oracle Linux 9 : qemu-kvm (ELSA-2024-2135)	Nessus	Oracle Linux Local Security Checks	2024/5/6	2025/9/9	high
198009	Oracle Linux 8 : virt:ol / and / virt-devel:rhel (ELSA-2024-2962)	Nessus	Oracle Linux Local Security Checks	2024/5/28	2025/9/9	high
235039	Debian dla-4144 : qemu - security update	Nessus	Debian Local Security Checks	2025/4/30	2025/4/30	high
320399	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS : QEMU vulnerabilities (USN-8412-1)	Nessus	Ubuntu Local Security Checks	2026/6/11	2026/6/11	high
187683	Ubuntu 20.04 LTS / 22.04 LTS / 23.04 / 23.10 : QEMU vulnerabilities (USN-6567-1)	Nessus	Ubuntu Local Security Checks	2024/1/8	2025/9/3	high
191790	Debian dla-3759 : qemu - security update	Nessus	Debian Local Security Checks	2024/3/11	2025/1/22	high
193168	Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12276)	Nessus	Oracle Linux Local Security Checks	2024/4/10	2025/9/9	high
200094	Oracle Linux 9 : qemu-kvm (ELSA-2024-12407)	Nessus	Oracle Linux Local Security Checks	2024/6/4	2024/9/5	high
238947	TencentOS Server 4: qemu (TSSA-2024:0869)	Nessus	Tencent Local Security Checks	2025/6/16	2025/11/20	high
226018	Linux Distros Unpatched Vulnerability : CVE-2023-5088	Nessus	Misc.	2025/3/5	2026/7/27	high
196971	Rocky Linux 9 : qemu-kvm (RLSA-2024:2135)	Nessus	Rocky Linux Local Security Checks	2024/5/14	2024/5/14	high

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