ID:12957 - 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
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP6
Debian Linux
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 11
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Linux Enterprise Micro for Rancher
SUSE Linux Enterprise Micro
SUSE Linux Micro Extras
SUSE Linux Micro
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
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 CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Enterprise Linux Server - TUS
SUSE Linux Enterprise Live Patching
Ubuntu
Basesystem Module
SUSE Real Time 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)
kpatch-patch-5_14_0-427_100_1 (Red Hat package)
kpatch-patch-4_18_0-477_107_1 (Red Hat package)
kgraft-patch-4_12_14-122_320-default
kpatch-patch-4_18_0-553_72_1 (Red Hat package)
kpatch-patch-5_14_0-284_134_1 (Red Hat package)
kpatch-patch-5_14_0-427_84_1 (Red Hat package)
kpatch-patch-4_18_0-477_97_1 (Red Hat package)
kpatch-patch-4_18_0-553_53_1 (Red Hat package)
kpatch-patch-5_14_0-427_68_2 (Red Hat package)
kpatch-patch-5_14_0-284_117_1 (Red Hat package)
kernel-livepatch-5_14_21-150400_24_228-default
kernel-livepatch-5_14_21-150400_24_228-default-debuginfo
kernel-livepatch-SLE15-SP4_Update_57-debugsource
kernel-livepatch-SLE15-SP5_Update_43-debugsource
kernel-livepatch-5_14_21-150500_55_177-default-debuginfo
kernel-livepatch-5_14_21-150500_55_177-default
kernel-livepatch-SLE15-SP6_Update_29-debugsource
kernel-livepatch-6_4_0-150600_23_125-default
kernel-livepatch-6_4_0-150600_23_125-default-debuginfo
kernel-livepatch-6_4_0-150700_7_62-rt-debuginfo
kernel-livepatch-SLE15-SP7-RT_Update_17-debugsource
kernel-livepatch-6_4_0-150700_7_62-rt
kernel-livepatch-6_4_0-150700_53_66-default-debuginfo
kernel-livepatch-SLE15-SP7_Update_18-debugsource
kernel-livepatch-6_4_0-150700_53_66-default
kernel-default-devel-debuginfo
kernel-trace
kernel-ec2
kernel-xen
kernel-default
kernel-trace-devel-debuginfo
kernel-ec2-devel-debuginfo
kernel-xen-debugsource
kernel-docs
kernel-xen-debuginfo
kernel-xen-devel-debuginfo
kernel-trace-devel
kernel-syms
kernel-default-devel
kernel-default-base
kernel-ec2-debuginfo
kernel-ec2-base
kernel-xen-base
kernel-ec2-debugsource
kernel-trace-base
kernel-source
kernel-trace-debuginfo
kernel-default-debuginfo
kernel-ec2-devel
kernel-default-debugsource
kernel-xen-devel
kernel-trace-debugsource
cluster-md-kmp-default
ocfs2-kmp-default-debuginfo
gfs2-kmp-default
ocfs2-kmp-default
dlm-kmp-default-debuginfo
dlm-kmp-default
cluster-md-kmp-default-debuginfo
kernel-default-base-debuginfo
gfs2-kmp-default-debuginfo
kernel-macros
kernel-devel
kernel-default-man
kernel-default-kgraft
kernel-default-kgraft-devel
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-debug-modules
kernel-debug-devel
kernel-debug-core
kernel-debug
kernel-doc
kernel-debug-modules-extra
kernel-core
kernel-cross-headers
kernel
bpftool
kernel-modules
kernel-modules-extra
kernel-tools
kernel-tools-libs
kernel-tools-libs-devel
perf
python3-perf
kernel-abi-stablelists
kernel-headers
kernel-tools-debuginfo
kernel-tools-devel
perf-debuginfo
python2-perf
python2-perf-debuginfo
python3-perf-debuginfo
kernel-debuginfo
kernel-debugsource
bpftool-debuginfo
kernel-source-rt
kernel-rt-debugsource
kernel-rt-debuginfo
kernel-rt
dtb-mediatek
reiserfs-kmp-default
kernel-64kb-debugsource
kernel-obs-build-debugsource
kernel-obs-build
kernel-64kb-devel
kernel-64kb-devel-debuginfo
kernel-64kb-debuginfo
kernel-64kb
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-zfcpdump
reiserfs-kmp-default-debuginfo
kernel-default-extra-debuginfo
dlm-kmp-64kb
gfs2-kmp-64kb-debuginfo
dtb-freescale
dtb-qcom
dtb-amlogic
dtb-marvell
reiserfs-kmp-64kb
ocfs2-kmp-64kb-debuginfo
cluster-md-kmp-64kb
dtb-apple
kernel-64kb-extra-debuginfo
dtb-apm
kernel-default-extra
kernel-default-optional-debuginfo
dtb-altera
kernel-obs-qa
kselftests-kmp-default
kselftests-kmp-default-debuginfo
kernel-default-livepatch
kernel-default-optional
kernel-docs-html
kernel-source-vanilla
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debuginfo
kernel-kvmsmall-devel
kernel-kvmsmall-debugsource
kernel-default-livepatch-devel
dtb-aarch64
kernel-kvmsmall
dtb-exynos
dtb-rockchip
kselftests-kmp-64kb-debuginfo
cluster-md-kmp-64kb-debuginfo
dtb-amazon
kselftests-kmp-64kb
dtb-socionext
dtb-arm
ocfs2-kmp-64kb
kernel-64kb-optional-debuginfo
dlm-kmp-64kb-debuginfo
gfs2-kmp-64kb
dtb-broadcom
dtb-cavium
dtb-nvidia
dtb-hisilicon
dtb-xilinx
kernel-64kb-optional
dtb-renesas
dtb-amd
dtb-allwinner
dtb-sprd
kernel-64kb-extra
dtb-lg
reiserfs-kmp-64kb-debuginfo
kernel-default-base-rebuild
kernel-rt_debug-debugsource
ocfs2-kmp-rt
kernel-rt-devel
cluster-md-kmp-rt-debuginfo
kernel-rt-vdso
kernel-rt-vdso-debuginfo
reiserfs-kmp-rt-debuginfo
kernel-rt-devel-debuginfo
kselftests-kmp-rt-debuginfo
kernel-devel-rt
kernel-rt_debug-vdso-debuginfo
kselftests-kmp-rt
dlm-kmp-rt
kernel-rt-optional-debuginfo
kernel-rt_debug-devel
kernel-rt-optional
kernel-rt-livepatch
kernel-rt_debug-debuginfo
kernel-rt_debug
reiserfs-kmp-rt
kernel-rt-livepatch-devel
gfs2-kmp-rt
kernel-rt-extra
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-devel-debuginfo
kernel-syms-rt
kernel-kvmsmall-vdso-debuginfo
kernel-default-vdso
kernel-kvmsmall-vdso
kernel-default-vdso-debuginfo
linux-azure-5.15 (Ubuntu package)
linux-nvidia-tegra-igx (Ubuntu package)
linux-azure-fde-5.15 (Ubuntu package)
kernel-debug-vdso
kernel-debug-vdso-debuginfo
kernel-debug-debuginfo
kernel-debug-devel-debuginfo
kernel-debug-debugsource
kernel-azure
kernel-azure-devel-debuginfo
kernel-azure-debugsource
kernel-azure-debuginfo
kernel-azure-devel
kernel-extra-modules
linux-lowlatency (Ubuntu package)
linux-hwe-6.8 (Ubuntu package)
linux-oracle-6.8 (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux (Debian package)
linux-azure-6.17 (Ubuntu package)
linux-oracle-6.17 (Ubuntu package)
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)

https://github.com/vulnquest58/dirtyclone-exploit

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.