Out-of-bounds write in Linux kernel - CVE-2026-46289

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Main Vulnerability Database Vulnerabilities #VU134241

Out-of-bounds write in Linux kernel - CVE-2026-46289

Published: June 10, 2026


Vulnerability identifier: #VU134241
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-46289
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds write in extract_kvec_to_sg in lib/scatterlist.c when extracting a kvec into a scatterlist. A local user can trigger the function with crafted kvec data to cause a denial of service.


Affected software

Linux kernel
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Micro
SUSE Linux Micro Extras
SUSE Linux Enterprise Live Patching
SUSE Real Time Module
Basesystem Module
Development Tools Module
Legacy Module
Public Cloud Module
openSUSE Leap
Ubuntu
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-SLE15-SP7_Update_18-debugsource
kernel-livepatch-6_4_0-150700_53_66-default
kernel-livepatch-6_4_0-150700_53_66-default-debuginfo
kernel-source-rt
kernel-kvmsmall-debuginfo
kernel-rt-debuginfo
kernel-rt-livepatch
kernel-rt-debugsource
kernel-rt
kernel-64kb-debugsource
kernel-64kb-devel
kernel-obs-build
kernel-default-devel
kernel-obs-build-debugsource
kernel-syms
kernel-default-debugsource
kernel-default
kernel-64kb
kernel-default-devel-debuginfo
kernel-kvmsmall-debugsource
kernel-source
kernel-rt-devel
kernel-rt-devel-debuginfo
kernel-kvmsmall
kernel-default-debuginfo
kernel-default-livepatch
kernel-devel
kernel-macros
kernel-devel-rt
kselftests-kmp-64kb
dtb-altera
dtb-broadcom
gfs2-kmp-64kb
kernel-64kb-devel-debuginfo
kernel-64kb-optional
dtb-qcom
cluster-md-kmp-64kb
dtb-hisilicon
gfs2-kmp-64kb-debuginfo
dtb-allwinner
dtb-exynos
dtb-apple
dtb-marvell
dtb-cavium
reiserfs-kmp-64kb
dtb-freescale
dtb-rockchip
dlm-kmp-64kb-debuginfo
dtb-apm
dtb-xilinx
dtb-nvidia
kernel-64kb-extra-debuginfo
dtb-sprd
kernel-64kb-debuginfo
dtb-amd
dtb-amlogic
cluster-md-kmp-64kb-debuginfo
dtb-amazon
dlm-kmp-64kb
kselftests-kmp-64kb-debuginfo
kernel-64kb-optional-debuginfo
dtb-lg
dtb-arm
kernel-source-vanilla
dtb-mediatek
kernel-docs-html
kernel-64kb-extra
ocfs2-kmp-64kb
reiserfs-kmp-64kb-debuginfo
ocfs2-kmp-64kb-debuginfo
dtb-renesas
dtb-aarch64
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-devel
kernel-zfcpdump
kernel-default-livepatch-devel
kernel-debug-debugsource
kernel-debug-devel-debuginfo
kernel-debug-devel
kernel-debug-debuginfo
gfs2-kmp-default
kernel-docs
kernel-debug
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-debug-vdso-debuginfo
kernel-kvmsmall-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-default-vdso
kernel-debug-vdso
kernel-default-vdso-debuginfo
cluster-md-kmp-default-debuginfo
kernel-default-extra-debuginfo
kernel-default-optional-debuginfo
kselftests-kmp-default
dlm-kmp-default
reiserfs-kmp-default
dtb-socionext
ocfs2-kmp-default-debuginfo
kselftests-kmp-default-debuginfo
kernel-default-optional
dlm-kmp-default-debuginfo
cluster-md-kmp-default
ocfs2-kmp-default
reiserfs-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
kernel-obs-qa
kernel-default-extra
kernel-default-base-rebuild
kernel-default-base
ocfs2-kmp-rt-debuginfo
dlm-kmp-rt
gfs2-kmp-rt-debuginfo
dlm-kmp-rt-debuginfo
gfs2-kmp-rt
cluster-md-kmp-rt-debuginfo
kernel-syms-rt
cluster-md-kmp-rt
ocfs2-kmp-rt
kernel-azure-devel
kernel-azure-debuginfo
kernel-azure-debugsource
kernel-azure-devel-debuginfo
kernel-azure
linux (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-hwe-6.8 (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-raspi (Ubuntu package)
linux-azure-fde (Ubuntu package)
linux-azure-fde-6.8 (Ubuntu package)
linux-azure (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-hwe-6.17 (Ubuntu package)
linux-azure-fde-6.17 (Ubuntu package)
linux-azure-6.17 (Ubuntu package)
linux-nvidia-6.17 (Ubuntu package)
linux-oem-6.17 (Ubuntu package)
linux-nvidia (Ubuntu package)

How to mitigate CVE-2026-46289

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel-livepatch-SLE15-SP6_Update_29-debugsource - update to 1-150600.13.7.1
kernel-livepatch-6_4_0-150600_23_125-default - update to 1-150600.13.7.1
kernel-livepatch-6_4_0-150600_23_125-default-debuginfo - update to 1-150600.13.7.1
kernel-livepatch-6_4_0-150700_7_62-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7-RT_Update_17-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_62-rt - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7_Update_18-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_66-default - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_66-default-debuginfo - update to 1-150700.15.3.1
kernel-source-rt - addressed in versions 6.4.0-49.1, 6.4.0-150700.7.62.1
kernel-kvmsmall-debuginfo - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1
kernel-rt-debuginfo - addressed in versions 6.4.0-49.1, 6.4.0-150700.7.62.1
kernel-rt-livepatch - update to 6.4.0-49.1
kernel-rt-debugsource - addressed in versions 6.4.0-49.1, 6.4.0-150700.7.62.1
kernel-rt - addressed in versions 6.4.0-49.1, 6.4.0-150700.7.62.1
kernel-64kb-debugsource - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-64kb-devel - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-obs-build - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-default-devel - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-obs-build-debugsource - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-syms - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-default-debugsource - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-default - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-64kb - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-default-devel-debuginfo - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-kvmsmall-debugsource - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1
kernel-source - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-rt-devel - addressed in versions 6.4.0-49.1, 6.4.0-150700.7.62.1
kernel-rt-devel-debuginfo - addressed in versions 6.4.0-49.1, 6.4.0-150700.7.62.1
kernel-kvmsmall - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1
kernel-default-debuginfo - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-default-livepatch - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-devel - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-macros - addressed in versions 6.4.0-49.1, 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-devel-rt - addressed in versions 6.4.0-49.1, 6.4.0-150700.7.62.1
kselftests-kmp-64kb - update to 6.4.0-150600.23.125.1
dtb-altera - update to 6.4.0-150600.23.125.1
dtb-broadcom - update to 6.4.0-150600.23.125.1
gfs2-kmp-64kb - update to 6.4.0-150600.23.125.1
kernel-64kb-devel-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-64kb-optional - update to 6.4.0-150600.23.125.1
dtb-qcom - update to 6.4.0-150600.23.125.1
cluster-md-kmp-64kb - update to 6.4.0-150600.23.125.1
dtb-hisilicon - update to 6.4.0-150600.23.125.1
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.125.1
dtb-allwinner - update to 6.4.0-150600.23.125.1
dtb-exynos - update to 6.4.0-150600.23.125.1
dtb-apple - update to 6.4.0-150600.23.125.1
dtb-marvell - update to 6.4.0-150600.23.125.1
dtb-cavium - update to 6.4.0-150600.23.125.1
reiserfs-kmp-64kb - update to 6.4.0-150600.23.125.1
dtb-freescale - update to 6.4.0-150600.23.125.1
dtb-rockchip - update to 6.4.0-150600.23.125.1
dlm-kmp-64kb-debuginfo - update to 6.4.0-150600.23.125.1
dtb-apm - update to 6.4.0-150600.23.125.1
dtb-xilinx - update to 6.4.0-150600.23.125.1
dtb-nvidia - update to 6.4.0-150600.23.125.1
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.125.1
dtb-sprd - update to 6.4.0-150600.23.125.1
kernel-64kb-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
dtb-amd - update to 6.4.0-150600.23.125.1
dtb-amlogic - update to 6.4.0-150600.23.125.1
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.125.1
dtb-amazon - update to 6.4.0-150600.23.125.1
dlm-kmp-64kb - update to 6.4.0-150600.23.125.1
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.125.1
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.125.1
dtb-lg - update to 6.4.0-150600.23.125.1
dtb-arm - update to 6.4.0-150600.23.125.1
kernel-source-vanilla - update to 6.4.0-150600.23.125.1
dtb-mediatek - update to 6.4.0-150600.23.125.1
kernel-docs-html - update to 6.4.0-150600.23.125.1
kernel-64kb-extra - update to 6.4.0-150600.23.125.1
ocfs2-kmp-64kb - update to 6.4.0-150600.23.125.1
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.125.1
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.125.1
dtb-renesas - update to 6.4.0-150600.23.125.1
dtb-aarch64 - update to 6.4.0-150600.23.125.1
kernel-kvmsmall-devel-debuginfo - update to 6.4.0-150600.23.125.1
kernel-kvmsmall-devel - update to 6.4.0-150600.23.125.1
kernel-zfcpdump - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-default-livepatch-devel - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-debug-debugsource - update to 6.4.0-150600.23.125.1
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.125.1
kernel-debug-devel - update to 6.4.0-150600.23.125.1
kernel-debug-debuginfo - update to 6.4.0-150600.23.125.1
gfs2-kmp-default - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-docs - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.2
kernel-debug - update to 6.4.0-150600.23.125.1
kernel-zfcpdump-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-zfcpdump-debugsource - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.125.1
kernel-kvmsmall-vdso - update to 6.4.0-150600.23.125.1
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.125.1
kernel-default-vdso - update to 6.4.0-150600.23.125.1
kernel-debug-vdso - update to 6.4.0-150600.23.125.1
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.125.1
cluster-md-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-default-extra-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.125.1
kselftests-kmp-default - update to 6.4.0-150600.23.125.1
dlm-kmp-default - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
reiserfs-kmp-default - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
dtb-socionext - update to 6.4.0-150600.23.125.1
ocfs2-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.125.1
kernel-default-optional - update to 6.4.0-150600.23.125.1
dlm-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
cluster-md-kmp-default - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
ocfs2-kmp-default - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
reiserfs-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
gfs2-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-obs-qa - update to 6.4.0-150600.23.125.1
kernel-default-extra - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1
kernel-default-base-rebuild - update to 6.4.0-150600.23.125.1.150600.12.58.3
kernel-default-base - addressed in versions 6.4.0-150600.23.125.1.150600.12.58.3, 6.4.0-150700.53.66.1.150700.17.39.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.62.1
dlm-kmp-rt - update to 6.4.0-150700.7.62.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.62.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.62.1
gfs2-kmp-rt - update to 6.4.0-150700.7.62.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.62.1
kernel-syms-rt - update to 6.4.0-150700.7.62.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.62.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.62.1
kernel-azure-devel - update to 6.4.0-150700.53.66.1
kernel-azure-debuginfo - update to 6.4.0-150700.53.66.1
kernel-azure-debugsource - update to 6.4.0-150700.53.66.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.53.66.1
kernel-azure - update to 6.4.0-150700.53.66.1
linux (Ubuntu package) - addressed in versions 6.8.0-134.134, 6.8.0-1057.58~22.04.1, 6.8.0-1058.61+fips1, 6.8.0-1058.61~22.04.1, 6.8.0-1060.61, 6.8.0-1060.63+fips1, 6.8.0-1060.63~22.04.1, 6.8.0-1063.69, 6.8.0-1063.69+fips1, 6.8.1-1055.56, 6.8.1-1055.56~22.04.1, 6.17.0-40.40, 7.0.0-27.27
linux-azure-fips (Ubuntu package) - addressed in versions 6.8.0-134.134+fips1, 6.8.0-1062.69+fips1
linux-hwe-6.8 (Ubuntu package) - update to 6.8.0-136.136~22.04.1
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1029.30
linux-aws-6.8 (Ubuntu package) - addressed in versions 6.8.0-1045.48, 6.8.0-1057.58~22.04.1, 6.8.0-1058.61.1, 6.8.0-1058.64, 6.8.0-1060.61~22.04.1, 6.8.0-1060.63~22.04.1, 6.8.0-1063.69~22.04.1
linux-raspi (Ubuntu package) - addressed in versions 6.8.0-1060.64, 6.17.0-1021.21, 7.0.0-1014.14
linux-azure-fde (Ubuntu package) - update to 6.8.0-1062.69
linux-azure-fde-6.8 (Ubuntu package) - update to 6.8.0-1062.69~22.04.1
linux-azure (Ubuntu package) - addressed in versions 6.8.0-1063.71, 6.8.0-1063.71~22.04.1, 7.0.0-1009.9, 7.0.0-1010.10
linux-raspi-realtime (Ubuntu package) - update to 6.8.0-2049.50
linux-hwe-6.17 (Ubuntu package) - update to 6.17.0-40.40~24.04.1
linux-azure-fde-6.17 (Ubuntu package) - update to 6.17.0-1018.18~24.04.1
linux-azure-6.17 (Ubuntu package) - update to 6.17.0-1021.21~24.04.1
linux-nvidia-6.17 (Ubuntu package) - update to 6.17.0-1026.26
linux-oem-6.17 (Ubuntu package) - update to 6.17.0-1028.28
linux-nvidia (Ubuntu package) - update to 7.0.0-1013.13

External References

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