The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2022:5821 advisory.

    * QEMU: QXL: integer overflow in cursor_alloc() can lead to heap buffer overflow (CVE-2021-4206)
    * QEMU: QXL: double fetch in qxl_cursor() can lead to heap buffer overflow (CVE-2021-4207)
    * QEMU: virtio-net: map leaking on error during receive (CVE-2022-26353)
    * QEMU: vhost-vsock: missing virtqueue detach on error can lead to memory leak (CVE-2022-26354)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 qemu / qemu-kvm installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-26354 advisory.

  - A flaw was found in the vhost-vsock device of QEMU. In case of error, an invalid element was not detached     from the virtqueue before freeing its memory, leading to memory leakage and other unexpected results.
    Affected QEMU versions <= 6.2.0. (CVE-2022-26354)

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

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2970 advisory.

    Several issues were discovered in QEMU, a fast processor emulator, which could result in denial of     service, information disclosure or the the execution of arbitrary code. For Debian 9 stretch, these     problems have been fixed in version 1:2.8+dfsg-6+deb9u17. 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 Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:5263 advisory.

    Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of     architectures. The qemu-kvm packages provide the user-space component for running virtual machines that     use KVM.

    Security Fix(es):

    * QEMU: virtio-net: map leaking on error during receive (CVE-2022-26353)

    * QEMU: vhost-vsock: missing virtqueue detach on error can lead to memory leak (CVE-2022-26354)

    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.

    Bug Fix(es):

    * RHEL 9.0 guest with vsock device migration failed from RHEL 9.0 > RHEL 8.6 (BZ#2071102)

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 Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3099 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3099-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                          Abhijith PA     September 05, 2022                            https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : qemu     Version        : 1:3.1+dfsg-8+deb10u9     CVE ID         : CVE-2020-13253 CVE-2020-15469 CVE-2020-15859 CVE-2020-25084                      CVE-2020-25085 CVE-2020-25624 CVE-2020-25625 CVE-2020-25723                      CVE-2020-27617 CVE-2020-27821 CVE-2020-28916 CVE-2020-29129                      CVE-2020-29443 CVE-2020-35504 CVE-2020-35505 CVE-2021-3392                      CVE-2021-3416 CVE-2021-3507 CVE-2021-3527 CVE-2021-3582                      CVE-2021-3607 CVE-2021-3608 CVE-2021-3682 CVE-2021-3713                      CVE-2021-3748 CVE-2021-3930 CVE-2021-4206 CVE-2021-4207                      CVE-2021-20181 CVE-2021-20196 CVE-2021-20203 CVE-2021-20221                      CVE-2021-20257 CVE-2022-26354 CVE-2022-35414

    Multiple security issues were discovered in QEMU, a fast processor     emulator, which could result in denial of service or the the execution     of arbitrary code.

    For Debian 10 buster, these problems have been fixed in version     1:3.1+dfsg-8+deb10u9.

    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 SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:0761-1 advisory.

    - bsc#1172033 (CVE-2020-13253)

    - bsc#1180207 (CVE-2020-14394)

    - bsc#1172382 (CVE-2020-13754)

    - bsc#1198038 (CVE-2022-0216)

    - bsc#1193880 (CVE-2021-3929)

    - bsc#1197653 (CVE-2022-1050)

    - bsc#1205808 (CVE-2022-4144), bsc#1198712 (CVE-2022-26354)

    - bsc#1175144 (CVE-2020-17380, CVE-2020-25085, CVE-2021-3409),       bsc#1185000 (CVE-2021-3507), bsc#1201367, CVE-2022-35414
    - About bsc#1175144, see also bsc#1182282 (CVE-2021-3409)

    - bsc#1198035, CVE-2021-4206

Tenable has extracted the preceding description block directly from the SUSE 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 AHV installed on the remote host is prior to 20230302.102005. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-20230302.100173 advisory.

  - A crafted NTFS image can trigger a heap-based buffer overflow, caused by an unsanitized attribute in     ntfs_get_attribute_value, in NTFS-3G < 2021.8.22. (CVE-2021-39263)

  - EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers     option from a DHCPv6 Advertise message. This vulnerability can be exploited by an attacker to gain     unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.
    (CVE-2023-45234)

  - A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may     allow an authenticated client to cause a denial of service. (CVE-2023-1667)

  - A vulnerability was found in libssh, where the authentication check of the connecting client can be     bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen     if there is insufficient memory or the memory usage is limited. The problem is caused by the return value     `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call     `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the     cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.
    (CVE-2023-2283)

  - A vulnerability was found that the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange     differ from response times of ciphertexts with correct PKCS#1 v1.5 padding. (CVE-2023-5981)

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

According to the versions of the qemu package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the     ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A     malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.
    (CVE-2019-20808)

  - An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing     transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid     values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The     highest threat from this vulnerability is to system availability. (CVE-2021-20257)

  - A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. The issue occurs while     handling a 'PVRDMA_CMD_CREATE_MR' command due to improper memory remapping (mremap). This flaw allows a     malicious guest to crash the QEMU process on the host. The highest threat from this vulnerability is to     system availability. (CVE-2021-3582)

  - An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw     exists in the bootp_input() function and could occur while processing a udp packet that is smaller than     the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of     uninitialized heap memory from the host. The highest threat from this vulnerability is to data     confidentiality. This flaw affects libslirp versions prior to 4.6.0. (CVE-2021-3592)

  - An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw     exists in the udp6_input() function and could occur while processing a udp packet that is smaller than the     size of the 'udphdr' structure. This issue may lead to out-of-bounds read access or indirect host memory     disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw     affects libslirp versions prior to 4.6.0. (CVE-2021-3593)

  - An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw     exists in the udp_input() function and could occur while processing a udp packet that is smaller than the     size of the 'udphdr' structure. This issue may lead to out-of-bounds read access or indirect host memory     disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw     affects libslirp versions prior to 4.6.0. (CVE-2021-3594)

  - An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw     exists in the tftp_input() function and could occur while processing a udp packet that is smaller than the     size of the 'tftp_t' structure. This issue may lead to out-of-bounds read access or indirect host memory     disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw     affects libslirp versions prior to 4.6.0. (CVE-2021-3595)

  - An integer overflow was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions     prior to 6.1.0. The issue occurs while handling a 'PVRDMA_REG_DSRHIGH' write from the guest due to     improper input validation. This flaw allows a privileged guest user to make QEMU allocate a large amount     of memory, resulting in a denial of service. The highest threat from this vulnerability is to system     availability. (CVE-2021-3607)

  - A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to     6.1.0. The issue occurs while handling a 'PVRDMA_REG_DSRHIGH' write from the guest and may result in a     crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest     threat from this vulnerability is to system availability. (CVE-2021-3608)

  - A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the     descriptor's address belongs to the non direct access region, due to num_buffers being set after the     virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a     denial of service condition, or potentially execute code on the host with the privileges of the QEMU     process. (CVE-2021-3748)

  - An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE     SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious     guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.
    (CVE-2021-3930)

  - A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0.
    The `self` pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A     malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host     when writing data reaches the threshold of mirroring node. (CVE-2021-4145)

  - A flaw was found in the vhost-vsock device of QEMU. In case of error, an invalid element was not detached     from the virtqueue before freeing its memory, leading to memory leakage and other unexpected results.
    Affected QEMU versions <= 6.2.0. (CVE-2022-26354)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:2260-1 advisory.

  - 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-2021-4206)

  - 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-2021-4207)

  - A flaw was found in the virtio-net device of QEMU. This flaw was inadvertently introduced with the fix for     CVE-2021-3748, which forgot to unmap the cached virtqueue elements on error, leading to memory leakage and     other unexpected results. Affected QEMU version: 6.2.0. (CVE-2022-26353)

  - A flaw was found in the vhost-vsock device of QEMU. In case of error, an invalid element was not detached     from the virtqueue before freeing its memory, leading to memory leakage and other unexpected results.
    Affected QEMU versions <= 6.2.0. (CVE-2022-26354)

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-2022-5821 advisory.

    libvirt     [8.0.0-5.2.0.1]
    - Set SOURCE_DATE_EPOCH from changelog [Orabug: 32019554]
    - Add runtime deps for pkg librbd1 >= 1:10.2.5 (Keshav Sharma)

    [8.0.0-5.2.el8]
    - cpu_map: Disable cpu64-rhel* for host-model and baseline (rhbz#2084030)
    - cputest: Drop some old artificial baseline tests (rhbz#2084030)
    - cputest: Give better names to baseline tests (rhbz#2084030)
    - cputest: Add some real world baseline tests (rhbz#2084030)
    - cpu_x86: Consolidate signature match in x86DecodeUseCandidate (rhbz#2084030)
    - cpu_x86: Refactor feature list comparison in x86DecodeUseCandidate (rhbz#2084030)
    - cpu_x86: Penalize disabled features when computing CPU model (rhbz#2084030)
    - cpu_x86: Ignore enabled features for input models in x86DecodeUseCandidate (rhbz#2084030)

    [8.0.0-5.1.el8]
    - conf: Introduce memory allocation threads (rhbz#2075569)
    - qemu_capabilities: Detect memory-backend-*.prealloc-threads property (rhbz#2075569)
    - qemu_validate: Validate prealloc threads against qemuCpas (rhbz#2075569)
    - qemu_command: Generate prealloc-threads property (rhbz#2075569)

    virt-v2v     [1:1.42.0-19.0.1]
    - replaced upstream references [Orabug:34095529]

    [1:1.42.0-19]
    - If listing RPM applications fails, rebuild DB and retry       resolves: rhbz#2093415

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 AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2022:5263 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 AHV installed on the remote host is prior to 20230302.102005. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-20230302.101026 advisory.

  - A crafted NTFS image can trigger a heap-based buffer overflow, caused by an unsanitized attribute in     ntfs_get_attribute_value, in NTFS-3G < 2021.8.22. (CVE-2021-39263)

  - EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers     option from a DHCPv6 Advertise message. This vulnerability can be exploited by an attacker to gain     unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.
    (CVE-2023-45234)

  - Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote     attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the     KeyTrap issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the     protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG     records. (CVE-2023-50387)

  - The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped)     allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC     responses in a random subdomain attack, aka the NSEC3 issue. The RFC 5155 specification implies that an     algorithm must perform thousands of iterations of a hash function in certain situations. (CVE-2023-50868)

  - close_altfile in filename.c in less before 606 omits shell_quote calls for LESSCLOSE. (CVE-2022-48624)

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
163904	AlmaLinux 8 : virt:rhel and virt-devel:rhel (5821) (ALSA-2022:5821)	Nessus	Alma Linux Local Security Checks	2022/8/6	2025/1/13	high
215567	Azure Linux 3.0 Security Update: qemu / qemu-kvm (CVE-2022-26354)	Nessus	Azure Linux Local Security Checks	2025/2/10	2025/9/15	low
159511	Debian DLA-2970-1 : qemu - LTS security update	Nessus	Debian Local Security Checks	2022/4/5	2025/1/24	high
162653	RHEL 9 : qemu-kvm (RHSA-2022:5263)	Nessus	Red Hat Local Security Checks	2022/7/1	2025/3/20	high
164678	Debian dla-3099 : qemu - security update	Nessus	Debian Local Security Checks	2022/9/5	2025/1/22	high
172642	SUSE SLES12: qemu / qemu-arm / qemu-audio-alsa / qemu-audio-oss / qemu-audio-pa / etc (SUSE-SU-2023:0761-1)	Nessus	SuSE Local Security Checks	2023/3/17	2026/6/26	high
206823	Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-20230302.100173)	Nessus	Misc.	2024/9/9	2025/2/17	low
163161	EulerOS Virtualization 2.10.0 : qemu (EulerOS-SA-2022-2043)	Nessus	Huawei Local Security Checks	2022/7/14	2023/10/18	high
163175	EulerOS Virtualization 2.10.1 : qemu (EulerOS-SA-2022-2071)	Nessus	Huawei Local Security Checks	2022/7/14	2023/10/18	high
162711	SUSE SLED15 / SLES15 Security Update : qemu (SUSE-SU-2022:2260-1)	Nessus	SuSE Local Security Checks	2022/7/5	2023/7/13	high
163859	Oracle Linux 8 : virt:ol / and / virt-devel:ol (ELSA-2022-5821)	Nessus	Oracle Linux Local Security Checks	2022/8/5	2024/11/1	high
167691	AlmaLinux 9 : qemu-kvm (ALSA-2022:5263)	Nessus	Alma Linux Local Security Checks	2022/11/16	2022/11/17	high
206824	Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-20230302.101026)	Nessus	Misc.	2024/9/9	2025/10/6	medium

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