Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1816)

high Nessus Plugin ID 319865

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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:

bonding: fix use-after-free due to enslave fail after slave array update (CVE-2026-23171)

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)

In the Linux kernel, the following vulnerability has been resolved:

btrfs: fix btrfs_ioctl_space_info() slot_count TOCTOU which can lead to info-leak (CVE-2026-46159)

In the Linux kernel, the following vulnerability has been resolved:

btrfs: fix double free in create_space_info_sub_group() error path (CVE-2026-46164)

In the Linux kernel, the following vulnerability has been resolved:

vsock/virtio: fix empty payload in tap skb for non-linear buffers (CVE-2026-46207)

In the Linux kernel, the following vulnerability has been resolved:

drm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs() (CVE-2026-46209)

In the Linux kernel, the following vulnerability has been resolved:

vsock/virtio: fix accept queue count leak on transport mismatch (CVE-2026-46214)

In the Linux kernel, the following vulnerability has been resolved:

sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL (CVE-2026-46227)

In the Linux kernel, the following vulnerability has been resolved:

vsock: fix buffer size clamping order (CVE-2026-46234)

In the Linux kernel, the following vulnerability has been resolved:

media: rc: xbox_remote: heed DMA restrictions (CVE-2026-46236)

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.

Plugin Details

Severity: High

ID: 319865

File Name: al2023_ALAS2023-2026-1816.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 6/8/2026

Updated: 6/17/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, 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-2026-46234

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: cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:python3-perf6.12, p-cpe:/a:amazon:linux:kernel6.12, p-cpe:/a:amazon:linux:kernel6.12-modules-extra, p-cpe:/a:amazon:linux:kernel6.12-debuginfo, 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:python3-perf6.12-debuginfo, p-cpe:/a:amazon:linux:bpftool6.12, p-cpe:/a:amazon:linux:bpftool6.12-debuginfo, p-cpe:/a:amazon:linux:kernel6.12-devel, p-cpe:/a:amazon:linux:kernel6.12-headers, p-cpe:/a:amazon:linux:kernel6.12-modules-extra-common, p-cpe:/a:amazon:linux:kernel6.12-tools, p-cpe:/a:amazon:linux:kernel6.12-tools-debuginfo, p-cpe:/a:amazon:linux:kernel6.12-tools-devel, p-cpe:/a:amazon:linux:kernel-livepatch-6.12.90-120.164

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-2026-23171, 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, CVE-2026-46159, CVE-2026-46164, CVE-2026-46207, CVE-2026-46209, CVE-2026-46214, CVE-2026-46227, CVE-2026-46234, CVE-2026-46236

Detections

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