ID:13045 - Exploit for Out-of-bounds write in Linux kernel - CVE-2026-46331

Vulnerability identifier: #VU134602

Vulnerability risk: Low

CVE-ID: CVE-2026-46331

CWE-ID: CWE-787

Exploitation vector: Local access

Vulnerable software:
Linux kernel
Debian Linux
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 11
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Manager Proxy
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
SUSE Linux Micro Extras
SUSE Linux Micro
Red Hat CodeReady Linux Builder for ARM 64
Anolis OS
Red Hat Enterprise Linux for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
SUSE Linux Enterprise Live Patching
Ubuntu
SUSE Real Time Module
Basesystem Module
Development Tools Module
Legacy Module
Public Cloud Module
openSUSE Leap
openEuler
kpatch-patch-4_18_0-477_143_1 (Red Hat package)
kpatch-patch-4_18_0-553_125_1 (Red Hat package)
kpatch-patch-5_14_0-284_172_1 (Red Hat package)
kpatch-patch-5_14_0-427_126_1 (Red Hat package)
kpatch-patch-5_14_0-687_10_1 (Red Hat package)
kpatch-patch-4_18_0-477_130_1 (Red Hat package)
kpatch-patch-4_18_0-553_109_1 (Red Hat package)
kpatch-patch-5_14_0-284_158_1 (Red Hat package)
kpatch-patch-5_14_0-427_113_1 (Red Hat package)
kpatch-patch-4_18_0-477_120_1 (Red Hat package)
kpatch-patch-4_18_0-553_85_1 (Red Hat package)
kpatch-patch-5_14_0-284_148_1 (Red Hat package)
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dlm-kmp-default
cluster-md-kmp-default-debuginfo
kernel-default-base-debuginfo
kernel-macros
kernel-devel
kernel-default-kgraft
Red Hat OpenShift Container Platform
linux (Ubuntu package)
linux-aws-hwe (Ubuntu package)
linux-oracle (Ubuntu package)
linux-azure (Ubuntu package)
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-tools-libs
kernel-tools-libs-devel
perf
python3-perf
kernel-abi-stablelists
kernel-doc
kernel-tools
kernel-modules-extra
kernel-modules
kernel-headers
kernel-debug-modules-extra
kernel-debug-modules
kernel-debug-devel
kernel-debug-core
kernel-debug
kernel-cross-headers
kernel-core
kernel
bpftool
python2-perf-debuginfo
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kgraft-patch-4_12_14-122_307-default
kgraft-patch-4_12_14-122_310-default
linux-kvm (Ubuntu package)
linux-oracle-5.4 (Ubuntu package)
linux-gcp-fips (Ubuntu package)
linux-azure-5.4 (Ubuntu package)
kernel-rt-debuginfo
kernel-rt
kernel-rt-debugsource
kernel-source-rt
kernel-64kb-debuginfo
kernel-64kb-devel-debuginfo
kernel-64kb-devel
reiserfs-kmp-default
kernel-64kb-debugsource
kernel-64kb
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-zfcpdump
kernel-obs-build
kernel-obs-build-debugsource
dtb-exynos
reiserfs-kmp-default-debuginfo
kernel-docs-html
kernel-source-vanilla
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debuginfo
dtb-mediatek
dlm-kmp-64kb
dtb-altera
reiserfs-kmp-64kb-debuginfo
dtb-lg
kernel-64kb-extra
dtb-sprd
dtb-allwinner
dtb-amd
dtb-renesas
kernel-64kb-optional
dtb-xilinx
dtb-hisilicon
dtb-nvidia
dtb-cavium
dtb-broadcom
gfs2-kmp-64kb
dlm-kmp-64kb-debuginfo
kernel-64kb-optional-debuginfo
ocfs2-kmp-64kb
dtb-arm
dtb-socionext
kselftests-kmp-64kb
dtb-amazon
cluster-md-kmp-64kb-debuginfo
kselftests-kmp-64kb-debuginfo
dtb-rockchip
reiserfs-kmp-64kb
dtb-apm
kernel-default-extra
kernel-default-optional-debuginfo
kernel-default-extra-debuginfo
kernel-obs-qa
kselftests-kmp-default
kselftests-kmp-default-debuginfo
kernel-default-livepatch
kernel-64kb-extra-debuginfo
dtb-apple
cluster-md-kmp-64kb
ocfs2-kmp-64kb-debuginfo
dtb-marvell
dtb-amlogic
kernel-kvmsmall
dtb-aarch64
dtb-qcom
dtb-freescale
kernel-default-optional
gfs2-kmp-64kb-debuginfo
kernel-default-livepatch-devel
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel
kernel-default-base-rebuild
kselftests-kmp-rt-debuginfo
kernel-rt-devel-debuginfo
kernel-rt_debug-debugsource
kernel-rt_debug-vdso-debuginfo
kselftests-kmp-rt
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kernel-rt-optional-debuginfo
kernel-rt_debug-devel
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kernel-rt-livepatch
gfs2-kmp-rt
kernel-rt-livepatch-devel
reiserfs-kmp-rt
kernel-rt_debug
kernel-devel-rt
kernel-rt_debug-devel-debuginfo
kernel-rt-extra
kernel-syms-rt
kernel-rt-extra-debuginfo
ocfs2-kmp-rt-debuginfo
dlm-kmp-rt-debuginfo
cluster-md-kmp-rt
kernel-rt_debug-vdso
gfs2-kmp-rt-debuginfo
kernel-rt_debug-debuginfo
ocfs2-kmp-rt
kernel-rt-devel
cluster-md-kmp-rt-debuginfo
kernel-rt-vdso
kernel-rt-vdso-debuginfo
reiserfs-kmp-rt-debuginfo
kernel-kvmsmall-vdso-debuginfo
kernel-default-vdso
kernel-kvmsmall-vdso
kernel-default-vdso-debuginfo
linux-fips (Ubuntu package)
linux-lowlatency (Ubuntu package)
linux-azure-5.15 (Ubuntu package)
linux-nvidia-tegra-igx (Ubuntu package)
linux-aws-5.15 (Ubuntu package)
linux-azure-fde-5.15 (Ubuntu package)
kernel-livepatch-5_14_21-150400_24_214-default
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kernel-debug-vdso-debuginfo
kernel-debug-vdso
kernel-azure-devel-debuginfo
kernel-azure-debugsource
kernel-azure-debuginfo
kernel-azure-devel
kernel-azure
kernel-extra-modules
linux-hwe-6.8 (Ubuntu package)
linux-oracle-6.8 (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-raspi (Ubuntu package)
linux (Debian package)
linux-azure-6.17 (Ubuntu package)
linux-oracle-6.17 (Ubuntu package)
linux-nvidia-6.17 (Ubuntu package)
kernel-livepatch-5_14_21-150400_24_209-default
kernel-livepatch-5_14_21-150400_24_209-default-debuginfo
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kernel-livepatch-5_14_21-150500_55_163-default
kernel-livepatch-5_14_21-150500_55_163-default-debuginfo
linux-hwe-7.0 (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
linux-aws-7.0 (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-nvidia-bos (Ubuntu package)
kgraft-patch-4_12_14-122_302-default
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https://github.com/sgkdev/packet_edit_meme

The vulnerability allows a local user to cause memory corruption.

The vulnerability exists due to an out-of-bounds write in tcf_pedit_act() when processing packet edit actions with typed keys and runtime header offsets. A local user can supply crafted pedit parameters that cause writes to a region that has not been properly copy-on-written to cause memory corruption.

The issue can involve negative offsets such as Ethernet header edits at ingress.

Install security update from vendor's repository.