ID:13047 - Exploit for Improper control of a resource through its lifetime in Linux kernel - CVE-2026-46300

Vulnerability identifier: #VU132211

Vulnerability risk: Low

CVE-ID: CVE-2026-46300

CWE-ID: CWE-664

Exploitation vector: Local access

Vulnerable software:
Linux kernel
Debian Linux
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
SUSE Linux Micro
Anolis OS
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for ARM 64
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
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
SUSE Linux Enterprise Live Patching
Legacy Module
Public Cloud Module
Development Tools Module
Basesystem Module
SUSE Real Time Module
openSUSE Leap
Ubuntu
Fedora
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-5_14_0-570_94_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-5_14_0-570_66_1 (Red Hat package)
kpatch-patch-4_18_0-477_107_1 (Red Hat package)
kpatch-patch-5_14_0-570_39_1 (Red Hat package)
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)
Dell Data Lakehouse
kgraft-patch-4_12_14-122_307-default
kpatch-patch-4_18_0-477_97_1 (Red Hat package)
kpatch-patch-4_18_0-553_53_1 (Red Hat package)
kpatch-patch-4_18_0-477_89_1 (Red Hat package)
kpatch-patch-4_18_0-553_40_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)
kpatch-patch-5_14_0-427_55_1 (Red Hat package)
kpatch-patch-5_14_0-570_17_1 (Red Hat package)
kpatch-patch-5_14_0-284_104_1 (Red Hat package)
kernel-livepatch-5_14_21-150400_24_214-default-debuginfo
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kernel-livepatch-5_14_21-150400_24_214-default
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kernel-livepatch-6_4_0-150700_7_51-rt
kernel-livepatch-6_4_0-150700_7_51-rt-debuginfo
kernel-livepatch-SLE15-SP7_Update_15-debugsource
kernel-livepatch-6_4_0-150700_53_55-default-debuginfo
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APEX Cloud Platform for Red Hat OpenShift
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kgraft-patch-4_12_14-122_296-default
dlm-kmp-default
gfs2-kmp-default-debuginfo
kernel-default-base-debuginfo
dlm-kmp-default-debuginfo
gfs2-kmp-default
kernel-default-base
kernel-default-devel
kernel-default-man
kernel-default-debugsource
cluster-md-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default
kernel-macros
kernel-source
kernel-devel
kernel-default-devel-debuginfo
kernel-default-kgraft-devel
kernel-default-kgraft
kernel-default-debuginfo
kernel-syms
ocfs2-kmp-default
cluster-md-kmp-default
kernel (Red Hat package)
kernel-rt (Red Hat package)
python3-perf
bpftool
kernel
kernel-core
kernel-cross-headers
kernel-debug
kernel-debug-core
kernel-debug-devel
kernel-debug-modules-extra
kernel-doc
kernel-abi-stablelists
perf
kernel-tools-libs-devel
kernel-tools-libs
kernel-modules-extra
kernel-modules
kernel-headers
kernel-tools
kernel-debug-modules
Red Hat OpenShift Container Platform
kernel-livepatch-5_14_21-150400_24_200-default-debuginfo
kernel-livepatch-5_14_21-150400_24_197-default-debuginfo
kernel-livepatch-SLE15-SP4_Update_49-debugsource
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kernel-livepatch-5_14_21-150400_24_197-default
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kernel-livepatch-6_4_0-150700_53_37-default-debuginfo
kernel-livepatch-6_4_0-150700_7_37-rt-debuginfo
kernel-livepatch-6_4_0-150700_7_37-rt
kernel-livepatch-SLE15-SP7-RT_Update_11-debugsource
kernel-livepatch-6_4_0-150700_7_34-rt-debuginfo
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kernel-livepatch-6_4_0-150700_53_34-default-debuginfo
kernel-source-rt
kernel-rt-debugsource
kernel-rt
kernel-rt-debuginfo
cluster-md-kmp-64kb
dtb-xilinx
dtb-lg
dlm-kmp-64kb-debuginfo
kernel-docs
kernel-docs-html
kernel-source-vanilla
reiserfs-kmp-64kb
dtb-qcom
ocfs2-kmp-64kb
kernel-kvmsmall-devel
kernel-kvmsmall-debuginfo
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debugsource
kernel-default-livepatch-devel
dtb-altera
dtb-apm
kselftests-kmp-64kb
gfs2-kmp-64kb-debuginfo
dtb-exynos
kernel-64kb-optional
kernel-64kb-optional-debuginfo
dtb-hisilicon
dtb-amlogic
dtb-renesas
kernel-64kb-debugsource
dtb-freescale
dtb-marvell
dtb-broadcom
reiserfs-kmp-64kb-debuginfo
kernel-64kb-extra
dtb-apple
kernel-64kb-devel-debuginfo
dtb-arm
dtb-nvidia
kernel-64kb-extra-debuginfo
cluster-md-kmp-64kb-debuginfo
kernel-default-extra
kselftests-kmp-64kb-debuginfo
dlm-kmp-64kb
dtb-sprd
dtb-socionext
reiserfs-kmp-default
kernel-default-optional
kernel-default-livepatch
kselftests-kmp-default-debuginfo
kernel-obs-qa
kernel-obs-build-debugsource
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-kvmsmall
dtb-rockchip
kernel-default-optional-debuginfo
dtb-amazon
dtb-amd
kselftests-kmp-default
reiserfs-kmp-default-debuginfo
kernel-default-extra-debuginfo
ocfs2-kmp-64kb-debuginfo
kernel-64kb-devel
dtb-allwinner
gfs2-kmp-64kb
dtb-mediatek
kernel-obs-build
dtb-cavium
kernel-64kb-debuginfo
dtb-aarch64
kernel-64kb
kernel-default-base-rebuild
kernel-rt-vdso
kernel-rt-livepatch
gfs2-kmp-rt
kernel-rt-devel-debuginfo
kernel-rt_debug-vdso
kernel-syms-rt
kernel-rt_debug-devel-debuginfo
gfs2-kmp-rt-debuginfo
reiserfs-kmp-rt-debuginfo
reiserfs-kmp-rt
cluster-md-kmp-rt
cluster-md-kmp-rt-debuginfo
dlm-kmp-rt
kselftests-kmp-rt
kernel-rt_debug
ocfs2-kmp-rt
kernel-devel-rt
kernel-rt-extra
kernel-rt_debug-debuginfo
kernel-rt-extra-debuginfo
kernel-rt_debug-debugsource
kernel-rt-livepatch-devel
kernel-rt_debug-devel
kselftests-kmp-rt-debuginfo
kernel-rt-optional-debuginfo
kernel-rt-optional
kernel-rt-vdso-debuginfo
dlm-kmp-rt-debuginfo
kernel-rt_debug-vdso-debuginfo
kernel-rt-devel
ocfs2-kmp-rt-debuginfo
kernel-kvmsmall-vdso-debuginfo
kernel-default-vdso-debuginfo
kernel-default-vdso
kernel-kvmsmall-vdso
linux (Ubuntu package)
linux-xilinx-zynqmp (Ubuntu package)
linux-azure-5.15 (Ubuntu package)
linux-azure (Ubuntu package)
kernel-livepatch-6_4_0-39-default
kernel-livepatch-6_4_0-39-default-debuginfo
kernel-livepatch-MICRO-6-0_Update_16-debugsource
linux (Debian package)
kernel-debug-debugsource
kernel-debug-debuginfo
kernel-debug-devel-debuginfo
kernel-debug-vdso
kernel-debug-vdso-debuginfo
kernel-azure-devel-debuginfo
kernel-azure-devel
kernel-azure
kernel-azure-debugsource
kernel-azure-debuginfo
kernel-livepatch-5_14_21-150400_24_194-default-debuginfo
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kernel-livepatch-5_14_21-150400_24_194-default
kernel-livepatch-SLE15-SP6_Update_20-debugsource
kernel-livepatch-6_4_0-150600_23_87-default
kernel-livepatch-6_4_0-150600_23_87-default-debuginfo
kernel-livepatch-6_4_0-150700_7_31-rt-debuginfo
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kernel-livepatch-6_4_0-150700_53_31-default
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kernel-livepatch-6_4_0-150700_53_31-default-debuginfo
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kernel-livepatch-6_12_0-160000_26-rt
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kernel-livepatch-SLE15-SP5_Update_27-debugsource
kernel-livepatch-5_14_21-150400_24_164-default
kernel-livepatch-5_14_21-150400_24_164-default-debuginfo
kernel-livepatch-SLE15-SP4_Update_40-debugsource
kernel-livepatch-5_14_21-150500_55_103-default-debuginfo
kernel-livepatch-5_14_21-150500_55_103-default
kernel-livepatch-SLE15-SP5_Update_26-debugsource

https://github.com/0xBlackash/CVE-2026-46300

The vulnerability allows a local user to cause memory corruption.

The vulnerability exists due to improper state management in skb_try_coalesce() when transferring paged fragments during TCP receive coalescing. A local user can trigger packet processing that moves shared fragments into an unmarked skb to cause memory corruption.

The issue can lead ESP input to incorrectly treat an uncloned nonlinear skb as not having shared fragments and perform in-place decryption over externally owned or page-cache-backed fragments.

Install security update from vendor's repository.