Out-of-bounds write in Linux kernel - CVE-2026-74454

 

Out-of-bounds write in Linux kernel - CVE-2026-74454

Published: August 16, 2026


Vulnerability identifier: #VU143318
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-74454
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to an out-of-bounds write in vc4_overflow_mem_work() when handling a binner out-of-memory event. A local user can trigger a GPU job overflow to corrupt memory and cause a denial of service.

The issue arises because the GPU is authorized to DMA beyond the intended 512KB overflow slot, potentially overwriting in-flight job data and unrelated CMA memory.


Affected software

Linux kernel
Debian Linux
SUSE Linux Enterprise Server 15 SP6
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
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise High Performance Computing 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
SUSE Linux Enterprise Micro for Rancher
SUSE Linux Enterprise Live Patching
Basesystem Module
Development Tools Module
Legacy Module
Public Cloud Module
openSUSE Leap
kgraft-patch-4_12_14-122_328-default
kernel-livepatch-5_14_21-150400_24_240-default-debuginfo
kernel-livepatch-5_14_21-150400_24_240-default
kernel-livepatch-SLE15-SP4_Update_59-debugsource
kernel-livepatch-5_14_21-150500_55_189-default
kernel-livepatch-SLE15-SP5_Update_45-debugsource
kernel-livepatch-5_14_21-150500_55_189-default-debuginfo
kernel-livepatch-SLE15-SP6_Update_31-debugsource
kernel-livepatch-6_4_0-150600_23_135-default-debuginfo
kernel-livepatch-6_4_0-150600_23_135-default
kernel-livepatch-SLE15-SP7_Update_21-debugsource
kernel-livepatch-6_4_0-150700_53_81-default-debuginfo
kernel-livepatch-6_4_0-150700_53_81-default
cluster-md-kmp-default
kernel-default-debuginfo
kernel-default-kgraft-devel
kernel-default-kgraft
kernel-default-debugsource
kernel-default
kernel-syms
cluster-md-kmp-default-debuginfo
dlm-kmp-default-debuginfo
kernel-default-base-debuginfo
ocfs2-kmp-default
dlm-kmp-default
gfs2-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
gfs2-kmp-default
kernel-default-devel
kernel-default-base
kernel-default-devel-debuginfo
kernel-source
kernel-devel
kernel-macros
kernel-default-man
kernel-rt
kernel-rt-debuginfo
kernel-rt-debugsource
kernel-source-rt
kernel-docs
kernel-obs-build
kernel-obs-build-debugsource
kernel-default-livepatch
kernel-64kb-debugsource
kernel-64kb-devel
kernel-64kb-devel-debuginfo
kernel-64kb-debuginfo
reiserfs-kmp-default-debuginfo
kernel-default-livepatch-devel
kernel-zfcpdump
kernel-64kb
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
reiserfs-kmp-default
kselftests-kmp-rt
reiserfs-kmp-rt-debuginfo
kernel-rt_debug-vdso-debuginfo
kernel-rt-devel-debuginfo
cluster-md-kmp-rt-debuginfo
kernel-rt-optional
cluster-md-kmp-rt
dlm-kmp-rt-debuginfo
kernel-rt-optional-debuginfo
kernel-rt_debug-devel
kernel-rt_debug-debuginfo
gfs2-kmp-rt-debuginfo
ocfs2-kmp-rt
kernel-rt-vdso-debuginfo
ocfs2-kmp-rt-debuginfo
kernel-syms-rt
kernel-rt-devel
kernel-rt-livepatch-devel
kernel-rt-extra-debuginfo
reiserfs-kmp-rt
kselftests-kmp-rt-debuginfo
dlm-kmp-rt
gfs2-kmp-rt
kernel-rt-vdso
kernel-rt-livepatch
kernel-rt_debug
kernel-devel-rt
kernel-rt_debug-debugsource
kernel-rt_debug-devel-debuginfo
kernel-rt-extra
kernel-rt_debug-vdso
kernel-kvmsmall
kernel-docs-html
kernel-source-vanilla
kernel-kvmsmall-vdso-debuginfo
kernel-default-vdso-debuginfo
kernel-kvmsmall-vdso
kernel-default-vdso
kernel-kvmsmall-debuginfo
kernel-kvmsmall-devel
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel-debuginfo
kernel-default-optional-debuginfo
dlm-kmp-64kb-debuginfo
kernel-default-extra
kernel-obs-qa
kernel-default-extra-debuginfo
kselftests-kmp-default-debuginfo
kselftests-kmp-default
kselftests-kmp-64kb-debuginfo
dlm-kmp-64kb
ocfs2-kmp-64kb
cluster-md-kmp-64kb-debuginfo
reiserfs-kmp-64kb
ocfs2-kmp-64kb-debuginfo
gfs2-kmp-64kb
kernel-default-optional
kselftests-kmp-64kb
cluster-md-kmp-64kb
kernel-64kb-optional-debuginfo
kernel-64kb-extra
reiserfs-kmp-64kb-debuginfo
gfs2-kmp-64kb-debuginfo
kernel-64kb-optional
kernel-64kb-extra-debuginfo
kernel-default-base-rebuild
kernel-debug-devel
kernel-debug-debuginfo
kernel-debug-vdso-debuginfo
kernel-debug-vdso
kernel-debug-debugsource
kernel-debug
kernel-debug-devel-debuginfo
kernel-azure-devel-debuginfo
kernel-azure-debuginfo
kernel-azure-debugsource
kernel-azure-devel
kernel-azure
linux (Debian package)

How to mitigate CVE-2026-74454

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kgraft-patch-4_12_14-122_328-default - update to 1-8.5.1
kernel-livepatch-5_14_21-150400_24_240-default-debuginfo - update to 1-150400.9.5.1
kernel-livepatch-5_14_21-150400_24_240-default - update to 1-150400.9.5.1
kernel-livepatch-SLE15-SP4_Update_59-debugsource - update to 1-150400.9.5.1
kernel-livepatch-5_14_21-150500_55_189-default - update to 1-150500.11.5.3
kernel-livepatch-SLE15-SP5_Update_45-debugsource - update to 1-150500.11.5.3
kernel-livepatch-5_14_21-150500_55_189-default-debuginfo - update to 1-150500.11.5.3
kernel-livepatch-SLE15-SP6_Update_31-debugsource - update to 1-150600.13.3.4
kernel-livepatch-6_4_0-150600_23_135-default-debuginfo - update to 1-150600.13.3.4
kernel-livepatch-6_4_0-150600_23_135-default - update to 1-150600.13.3.4
kernel-livepatch-SLE15-SP7_Update_21-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_81-default-debuginfo - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_81-default - update to 1-150700.15.3.1
cluster-md-kmp-default - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-default-debuginfo - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-default-kgraft-devel - update to 4.12.14-122.328.1
kernel-default-kgraft - update to 4.12.14-122.328.1
kernel-default-debugsource - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-default - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-syms - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.1, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-default-base-debuginfo - update to 4.12.14-122.328.1
ocfs2-kmp-default - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
dlm-kmp-default - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
gfs2-kmp-default - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-default-devel - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-default-base - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2.150400.24.120.2, 5.14.21-150500.55.189.1.150500.6.87.4, 6.4.0-150600.23.135.1.150600.12.62.4, 6.4.0-150700.53.81.1.150700.17.45.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-source - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.1, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-devel - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.1, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-macros - addressed in versions 4.12.14-122.328.1, 5.14.21-150400.24.240.1, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-default-man - update to 4.12.14-122.328.1
kernel-rt - addressed in versions 5.14.21-150400.15.186.1, 5.14.21-150500.13.161.1
kernel-rt-debuginfo - addressed in versions 5.14.21-150400.15.186.1, 5.14.21-150500.13.161.1
kernel-rt-debugsource - addressed in versions 5.14.21-150400.15.186.1, 5.14.21-150500.13.161.1
kernel-source-rt - addressed in versions 5.14.21-150400.15.186.1, 5.14.21-150500.13.161.1
kernel-docs - addressed in versions 5.14.21-150400.24.240.1, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-obs-build - addressed in versions 5.14.21-150400.24.240.1, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-obs-build-debugsource - addressed in versions 5.14.21-150400.24.240.1, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-default-livepatch - addressed in versions 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-64kb-debugsource - addressed in versions 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-64kb-devel - addressed in versions 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-64kb-devel-debuginfo - addressed in versions 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-64kb-debuginfo - addressed in versions 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
reiserfs-kmp-default-debuginfo - addressed in versions 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-default-livepatch-devel - addressed in versions 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-zfcpdump - addressed in versions 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-64kb - addressed in versions 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-zfcpdump-debuginfo - addressed in versions 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-zfcpdump-debugsource - addressed in versions 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
reiserfs-kmp-default - addressed in versions 5.14.21-150400.24.240.2, 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kselftests-kmp-rt - update to 5.14.21-150500.13.161.1
reiserfs-kmp-rt-debuginfo - update to 5.14.21-150500.13.161.1
kernel-rt_debug-vdso-debuginfo - update to 5.14.21-150500.13.161.1
kernel-rt-devel-debuginfo - update to 5.14.21-150500.13.161.1
cluster-md-kmp-rt-debuginfo - update to 5.14.21-150500.13.161.1
kernel-rt-optional - update to 5.14.21-150500.13.161.1
cluster-md-kmp-rt - update to 5.14.21-150500.13.161.1
dlm-kmp-rt-debuginfo - update to 5.14.21-150500.13.161.1
kernel-rt-optional-debuginfo - update to 5.14.21-150500.13.161.1
kernel-rt_debug-devel - update to 5.14.21-150500.13.161.1
kernel-rt_debug-debuginfo - update to 5.14.21-150500.13.161.1
gfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.161.1
ocfs2-kmp-rt - update to 5.14.21-150500.13.161.1
kernel-rt-vdso-debuginfo - update to 5.14.21-150500.13.161.1
ocfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.161.1
kernel-syms-rt - update to 5.14.21-150500.13.161.1
kernel-rt-devel - update to 5.14.21-150500.13.161.1
kernel-rt-livepatch-devel - update to 5.14.21-150500.13.161.1
kernel-rt-extra-debuginfo - update to 5.14.21-150500.13.161.1
reiserfs-kmp-rt - update to 5.14.21-150500.13.161.1
kselftests-kmp-rt-debuginfo - update to 5.14.21-150500.13.161.1
dlm-kmp-rt - update to 5.14.21-150500.13.161.1
gfs2-kmp-rt - update to 5.14.21-150500.13.161.1
kernel-rt-vdso - update to 5.14.21-150500.13.161.1
kernel-rt-livepatch - update to 5.14.21-150500.13.161.1
kernel-rt_debug - update to 5.14.21-150500.13.161.1
kernel-devel-rt - update to 5.14.21-150500.13.161.1
kernel-rt_debug-debugsource - update to 5.14.21-150500.13.161.1
kernel-rt_debug-devel-debuginfo - update to 5.14.21-150500.13.161.1
kernel-rt-extra - update to 5.14.21-150500.13.161.1
kernel-rt_debug-vdso - update to 5.14.21-150500.13.161.1
kernel-kvmsmall - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-docs-html - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-source-vanilla - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-kvmsmall-vdso-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-default-vdso-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-kvmsmall-vdso - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-default-vdso - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-kvmsmall-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-kvmsmall-devel - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-kvmsmall-debugsource - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-kvmsmall-devel-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-default-optional-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
dlm-kmp-64kb-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-default-extra - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kernel-obs-qa - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-default-extra-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1, 6.4.0-150700.53.81.1
kselftests-kmp-default-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kselftests-kmp-default - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kselftests-kmp-64kb-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
dlm-kmp-64kb - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
ocfs2-kmp-64kb - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
cluster-md-kmp-64kb-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
reiserfs-kmp-64kb - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
ocfs2-kmp-64kb-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
gfs2-kmp-64kb - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-default-optional - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kselftests-kmp-64kb - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
cluster-md-kmp-64kb - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-64kb-optional-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-64kb-extra - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
reiserfs-kmp-64kb-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
gfs2-kmp-64kb-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-64kb-optional - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-64kb-extra-debuginfo - addressed in versions 5.14.21-150500.55.189.1, 6.4.0-150600.23.135.1
kernel-default-base-rebuild - addressed in versions 5.14.21-150500.55.189.1.150500.6.87.4, 6.4.0-150600.23.135.1.150600.12.62.4
kernel-debug-devel - update to 6.4.0-150600.23.135.1
kernel-debug-debuginfo - update to 6.4.0-150600.23.135.1
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.135.1
kernel-debug-vdso - update to 6.4.0-150600.23.135.1
kernel-debug-debugsource - update to 6.4.0-150600.23.135.1
kernel-debug - update to 6.4.0-150600.23.135.1
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.135.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.53.81.1
kernel-azure-debuginfo - update to 6.4.0-150700.53.81.1
kernel-azure-debugsource - update to 6.4.0-150700.53.81.1
kernel-azure-devel - update to 6.4.0-150700.53.81.1
kernel-azure - update to 6.4.0-150700.53.81.1
linux (Debian package) - update to 6.12.105-1

External References

Related Security Bulletins