Detections
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Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1816)
high Nessus Plugin ID 319865
Synopsis
The remote Amazon Linux 2023 host is missing a security update.Description
It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1816 advisory.In the Linux kernel, the following vulnerability has been resolved:
mm/pagewalk: fix race between concurrent split and refault (CVE-2026-31456)
In the Linux kernel, the following vulnerability has been resolved:
mm/userfaultfd: fix hugetlb fault mutex hash calculation (CVE-2026-31575)
In the Linux kernel, the following vulnerability has been resolved:
fuse: reject oversized dirents in page cache (CVE-2026-31694)
In the Linux kernel, the following vulnerability has been resolved:
net/packet: fix TOCTOU race on mmap'd vnet_hdr in tpacket_snd() (CVE-2026-31700)
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix OOB read in smb2_ioctl_query_info QUERY_INFO path (CVE-2026-31708)
In the Linux kernel, the following vulnerability has been resolved:
smb: client: validate the whole DACL before rewriting it in cifsacl (CVE-2026-31709)
In the Linux kernel, the following vulnerability has been resolved:
fs/ntfs3: validate rec->used in journal-replay file record check (CVE-2026-31716)
In the Linux kernel, the following vulnerability has been resolved:
Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)
In the Linux kernel, the following vulnerability has been resolved:
xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)
In the Linux kernel, the following vulnerability has been resolved:
net: af_key: zero aligned sockaddr tail in PF_KEY exports (CVE-2026-43088)
In the Linux kernel, the following vulnerability has been resolved:
x86: shadow stacks: proper error handling for mmap lock (CVE-2026-43109)
In the Linux kernel, the following vulnerability has been resolved:
smb: client: require a full NFS mode SID before reading mode bits (CVE-2026-43350)
Tenable has extracted the preceding description block directly from the tested product security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'dnf update kernel6.12 --releasever 2023.12.20260608' or or 'dnf update --advisory ALAS2023-2026-1816 --releasever 2023.12.20260608' to update your system.See Also
https://alas.aws.amazon.com//AL2023/ALAS2023-2026-1816.html
https://alas.aws.amazon.com/faqs.html
https://explore.alas.aws.amazon.com/CVE-2026-31456.html
https://explore.alas.aws.amazon.com/CVE-2026-31575.html
https://explore.alas.aws.amazon.com/CVE-2026-31694.html
https://explore.alas.aws.amazon.com/CVE-2026-31700.html
https://explore.alas.aws.amazon.com/CVE-2026-31708.html
https://explore.alas.aws.amazon.com/CVE-2026-31709.html
https://explore.alas.aws.amazon.com/CVE-2026-31716.html
https://explore.alas.aws.amazon.com/CVE-2026-31786.html
https://explore.alas.aws.amazon.com/CVE-2026-31787.html
https://explore.alas.aws.amazon.com/CVE-2026-43088.html
Plugin Details
Severity: High
ID: 319865
File Name: al2023_ALAS2023-2026-1816.nasl
Version: 1.1
Type: Local
Agent: unix
Published: 6/8/2026
Updated: 6/8/2026
Supported Sensors: Continuous Assessment, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.4
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5
Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2026-31787
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:python3-perf6.12, p-cpe:/a:amazon:linux:kernel6.12, p-cpe:/a:amazon:linux:kernel6.12-tools-devel, p-cpe:/a:amazon:linux:kernel6.12-headers, p-cpe:/a:amazon:linux:kernel6.12-modules-extra, p-cpe:/a:amazon:linux:kernel-livepatch-6.12.90-120.164, p-cpe:/a:amazon:linux:kernel6.12-debuginfo, p-cpe:/a:amazon:linux:bpftool6.12-debuginfo, p-cpe:/a:amazon:linux:bpftool6.12, p-cpe:/a:amazon:linux:kernel6.12-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:perf6.12, p-cpe:/a:amazon:linux:perf6.12-debuginfo, p-cpe:/a:amazon:linux:kernel6.12-debuginfo-common-aarch64, p-cpe:/a:amazon:linux:kernel6.12-modules-extra-common, cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:kernel6.12-devel, p-cpe:/a:amazon:linux:kernel6.12-tools-debuginfo, p-cpe:/a:amazon:linux:python3-perf6.12-debuginfo, p-cpe:/a:amazon:linux:kernel6.12-tools
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 6/8/2026
Vulnerability Publication Date: 4/22/2026
Reference Information
CVE: CVE-2026-31456, CVE-2026-31575, CVE-2026-31694, CVE-2026-31700, CVE-2026-31708, CVE-2026-31709, CVE-2026-31716, CVE-2026-31786, CVE-2026-31787, CVE-2026-43088, CVE-2026-43109, CVE-2026-43350