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

  - An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in     crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are     copied to userspace, potentially leaking sensitive memory to user programs. NOTE: this is a CVE-2013-2547     regression but with easier exploitability because the attacker does not need a capability (however, the     system must have the CONFIG_CRYPTO_USER kconfig option). (CVE-2018-19854)

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

The remote Ubuntu 14.04 LTS / 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3901-2 advisory.

    USN-3901-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the     corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu     16.04 LTS.

    Jann Horn discovered that the userfaultd implementation in the Linux kernel did not properly restrict     access to certain ioctls. A local attacker could use this possibly to modify files. (CVE-2018-18397)

    It was discovered that the crypto subsystem of the Linux kernel leaked uninitialized memory to user space     in some situations. A local attacker could use this to expose sensitive information (kernel memory).
    (CVE-2018-19854)

    Jann Horn discovered a race condition in the fork() system call in the Linux kernel. A local attacker     could use this to gain access to services that cache authorizations. (CVE-2019-6133)

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 Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-3517 advisory.

    - [virt] KVM: coalesced_mmio: add bounds checking (Bandan Das) [1746804] {CVE-2019-14821}
    - [vhost] vhost: make sure log_num < in_num (Eugenio Perez) [1750882] {CVE-2019-14835}
    - [wireless] mwifiex: fix 802.11n/WPA detection (Jarod Wilson) [1714476] {CVE-2019-3846}
    - [net] Bluetooth: Fix faulty expression for minimum encryption key size check (Gopal Tiwari) [1743076]     {CVE-2019-9506}
    - [net] Bluetooth: Fix regression with minimum encryption key size alignment (Gopal Tiwari) [1743076]     {CVE-2019-9506}
    - [net] Bluetooth: Align minimum encryption key size for LE and BR/EDR connections (Gopal Tiwari)     [1743076] {CVE-2019-9506}
    - [bluetooth] Bluetooth: hci_uart: check for missing tty operations (Gopal Tiwari) [1734239]     {CVE-2019-10207}
    - [documentation] Documentation: Add swapgs description to the Spectre v1 documentation (Josh Poimboeuf)     [1724501] {CVE-2019-1125}
    - [documentation] Documentation: Add section about CPU vulnerabilities for Spectre (Josh Poimboeuf)     [1724501] {CVE-2019-1125}
    - [x86] x86/speculation/swapgs: Exclude ATOMs from speculation through SWAPGS (Josh Poimboeuf) [1724501]     {CVE-2019-1125}
    - [x86] x86/entry/64: Use JMP instead of JMPQ (Josh Poimboeuf) [1724501] {CVE-2019-1125}
    - [x86] x86/speculation: Enable Spectre v1 swapgs mitigations (Josh Poimboeuf) [1724501] {CVE-2019-1125}
    - [x86] x86/speculation: Prepare entry code for Spectre v1 swapgs mitigations (Josh Poimboeuf) [1724501]     {CVE-2019-1125}
    - [x86] x86/cpufeatures: Combine word 11 and 12 into a new scattered features word (Josh Poimboeuf)     [1724501] {CVE-2019-1125}
    - [x86] x86/cpufeatures: Carve out CQM features retrieval (Josh Poimboeuf) [1724501] {CVE-2019-1125}
    - [net] sunrpc: make visible processing error in bc_svc_process() ('J. Bruce Fields') [1660823]     {CVE-2018-16884}
    - [net] sunrpc: remove unused xpo_prep_reply_hdr callback ('J. Bruce Fields') [1660823] {CVE-2018-16884}
    - [net] sunrpc: remove svc_tcp_bc_class ('J. Bruce Fields') [1660823] {CVE-2018-16884}
    - [net] sunrpc: replace svc_serv->sv_bc_xprt by boolean flag ('J. Bruce Fields') [1660823]     {CVE-2018-16884}

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 Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000276 advisory.

    An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in     crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are     copied to userspace, potentially leaking sensitive memory to user programs. NOTE: this is a CVE-2013-2547     regression but with easier exploitability because the attacker does not need a capability (however, the     system must have the CONFIG_CRYPTO_USER kconfig option).

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

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

It was discovered that a race condition existed in the vsock address family implementation of the Linux kernel that could lead to a use-after-free condition. A local attacker in a guest virtual machine could use this to expose sensitive information (host machine kernel memory). (CVE-2018-14625)

Cfir Cohen discovered that a use-after-free vulnerability existed in the KVM implementation of the Linux kernel, when handling interrupts in environments where nested virtualization is in use (nested KVM virtualization is not enabled by default in Ubuntu kernels). A local attacker in a guest VM could possibly use this to gain administrative privileges in a host machine. (CVE-2018-16882)

Wei Wu discovered that the KVM implementation in the Linux kernel did not properly ensure that ioapics were initialized. A local attacker could use this to cause a denial of service (system crash).
(CVE-2018-19407)

It was discovered that the crypto subsystem of the Linux kernel leaked uninitialized memory to user space in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-19854).

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

The SUSE Linux Enterprise 12 SP4 kernel for Azure was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2018-19407: The vcpu_scan_ioapic function in arch/x86/kvm/x86.c allowed local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that reach a situation where ioapic was uninitialized (bnc#1116841).

CVE-2018-16884: NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out (bnc#1119946).

CVE-2018-20169: The USB subsystem mishandled size checks during the reading of an extra descriptor, related to __usb_get_extra_descriptor in drivers/usb/core/usb.c (bnc#1119714).

CVE-2018-9568: In sk_clone_lock of sock.c, there is a possible memory corruption due to type confusion. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation (bnc#1118319).

CVE-2018-16862: A security flaw was found in the way that the cleancache subsystem clears an inode after the final file truncation (removal). The new file created with the same inode may contain leftover pages from cleancache and the old file data instead of the new one (bnc#1117186).

CVE-2018-14625: A flaw was found where an attacker may be able to have an uncontrolled read to kernel-memory from within a vm guest. A race condition between connect() and close() function may allow an attacker using the AF_VSOCK protocol to gather a 4 byte information leak or possibly intercept or corrupt AF_VSOCK messages destined to other clients (bnc#1106615).

CVE-2018-19985: The function hso_probe read if_num from the USB device (as an u8) and used it without a length check to index an array, resulting in an OOB memory read in hso_probe or hso_get_config_data that could be used by local attackers (bnc#1120743).

CVE-2018-12232: In net/socket.c there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions.
fchownat did not increment the file descriptor reference count, which allowed close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash (bnc#1097593).

CVE-2018-18397: The userfaultfd implementation mishandled access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c (bnc#1117656).

CVE-2018-19854: An issue was discovered in the crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are copied to userspace, potentially leaking sensitive memory to user programs.
NOTE: this is a CVE-2013-2547 regression but with easier exploitability because the attacker did not need a capability (however, the system must have the CONFIG_CRYPTO_USER kconfig option) (bnc#1118428).

CVE-2018-19824: A local user could exploit a use-after-free in the ALSA driver by supplying a malicious USB Sound device (with zero interfaces) that is mishandled in usb_audio_probe in sound/usb/card.c (bnc#1118152).

CVE-2018-18281: The mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. (bnc#1113769).

CVE-2017-5753: Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis (bnc#1074578)

The update package also includes non-security fixes. See advisory for details.

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
222256	Linux Distros Unpatched Vulnerability : CVE-2018-19854	Nessus	Misc.	2025/3/4	2026/7/17	medium
122647	Ubuntu 14.04 LTS / 16.04 LTS : Linux kernel (HWE) vulnerabilities (USN-3901-2)	Nessus	Ubuntu Local Security Checks	2019/3/6	2025/3/20	medium
180632	Oracle Linux 8 : kernel (ELSA-2019-3517)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2026/2/9	critical
281965	Unity Linux 20.1070e Security Update: kernel (UTSA-2026-000276)	Nessus	Unity Linux Local Security Checks	2026/1/7	2026/1/7	medium
121595	Ubuntu 18.10 : linux, linux-aws, linux-gcp, linux-kvm, linux-raspi2 vulnerabilities (USN-3878-1)	Nessus	Ubuntu Local Security Checks	2019/2/5	2024/6/24	high
121569	SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0222-1) (Spectre)	Nessus	SuSE Local Security Checks	2019/2/4	2022/5/24	high

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