Integer overflow in Linux kernel - CVE-2026-46209

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Main Vulnerability Database Vulnerabilities #VU132985

Integer overflow in Linux kernel - CVE-2026-46209

Published: May 29, 2026


Vulnerability identifier: #VU132985
CSH Severity: Low
CVSS v4 BT: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2026-46209
CWE-ID: CWE-190
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform out-of-bounds read or write operations.

The vulnerability exists due to an integer overflow in drm_gem_fb_init_with_funcs() when initializing framebuffer plane dimensions for sub-sampled pixel formats. A local user can create a specially crafted framebuffer configuration to perform out-of-bounds read or write operations.

The issue can occur for certain pixel format and dimension combinations where plane height calculation truncates instead of rounding up, causing the GEM object size check to accept an undersized object.


Affected software

Linux kernel
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
Anolis OS
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat CodeReady Linux Builder for ARM 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 Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
SUSE Linux Enterprise Live Patching
openSUSE Leap
openEuler
Ubuntu
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel-livepatch-SLE15-SP6_Update_28-debugsource
kernel-livepatch-6_4_0-150600_23_118-default-debuginfo
kernel-livepatch-6_4_0-150600_23_118-default
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-headers
kernel-debug-modules-extra
kernel-devel
bpftool
kernel
kernel-core
kernel-cross-headers
kernel-debug
kernel-debug-core
kernel-debug-devel
kernel-debug-modules
kernel-doc
kernel-abi-stablelists
python3-perf
perf
kernel-tools-libs-devel
kernel-tools-libs
kernel-tools
kernel-modules-extra
kernel-modules
bpftool-debuginfo
kernel-debuginfo
python3-perf-debuginfo
python2-perf-debuginfo
python2-perf
perf-debuginfo
kernel-tools-devel
kernel-tools-debuginfo
kernel-source
kernel-debugsource
linux (Ubuntu package)
linux-aws (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-nvidia-tegra-5.15 (Ubuntu package)
linux-ibm-5.15 (Ubuntu package)
linux-azure (Ubuntu package)
linux-azure-5.15 (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-azure-fde (Ubuntu package)
gfs2-kmp-64kb
dtb-amazon
kernel-64kb-extra-debuginfo
dtb-renesas
kernel-64kb-extra
dtb-apm
dtb-sprd
dtb-freescale
dtb-apple
reiserfs-kmp-64kb
dtb-amd
kernel-default-livepatch
kernel-64kb-debuginfo
dtb-lg
dtb-cavium
kernel-macros
kselftests-kmp-default
dtb-socionext
dtb-xilinx
dlm-kmp-64kb-debuginfo
cluster-md-kmp-64kb-debuginfo
dtb-marvell
dlm-kmp-64kb
dtb-allwinner
reiserfs-kmp-default-debuginfo
kernel-default-debugsource
kernel-syms
ocfs2-kmp-default-debuginfo
kernel-obs-build-debugsource
cluster-md-kmp-default-debuginfo
kernel-obs-build
dlm-kmp-default
reiserfs-kmp-default
dlm-kmp-default-debuginfo
cluster-md-kmp-default
gfs2-kmp-default-debuginfo
kernel-default-livepatch-devel
kernel-default-devel-debuginfo
kernel-default-debuginfo
gfs2-kmp-default
ocfs2-kmp-default
kernel-default-devel
kernel-default
cluster-md-kmp-64kb
kernel-docs
kernel-kvmsmall-vdso-debuginfo
dtb-arm
dtb-qcom
kernel-default-optional-debuginfo
kernel-default-extra-debuginfo
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kselftests-kmp-64kb
kernel-kvmsmall
kernel-docs-html
kernel-source-vanilla
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debuginfo
kernel-debug-vdso-debuginfo
kernel-zfcpdump
kernel-debug-vdso
kernel-kvmsmall-vdso
kernel-default-vdso-debuginfo
kernel-default-vdso
kernel-debug-debugsource
kernel-debug-debuginfo
kernel-debug-devel-debuginfo
kernel-64kb
dtb-aarch64
kernel-default-extra
kselftests-kmp-default-debuginfo
kernel-obs-qa
kernel-default-optional
kernel-64kb-devel
reiserfs-kmp-64kb-debuginfo
dtb-broadcom
kernel-64kb-optional
kselftests-kmp-64kb-debuginfo
dtb-amlogic
dtb-hisilicon
dtb-mediatek
kernel-64kb-devel-debuginfo
dtb-altera
dtb-nvidia
gfs2-kmp-64kb-debuginfo
kernel-64kb-debugsource
dtb-exynos
kernel-64kb-optional-debuginfo
ocfs2-kmp-64kb
dtb-rockchip
ocfs2-kmp-64kb-debuginfo
kernel-default-base
kernel-default-base-rebuild
linux-fips (Ubuntu package)
linux-hwe-6.8 (Ubuntu package)
linux-ibm (Ubuntu package)
linux-oracle-6.8 (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-azure-fde-6.8 (Ubuntu package)
linux-gcp-fips (Ubuntu package)
linux-oem-7.0 (Ubuntu package)

How to mitigate CVE-2026-46209

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel-livepatch-SLE15-SP6_Update_28-debugsource - update to 1-150600.13.3.1
kernel-livepatch-6_4_0-150600_23_118-default-debuginfo - update to 1-150600.13.3.1
kernel-livepatch-6_4_0-150600_23_118-default - update to 1-150600.13.3.1
kernel (Red Hat package) - addressed in versions 4.18.0-305.199.1.el8_4, 4.18.0-372.201.1.el8_6, 4.18.0-477.152.1.el8_8, 4.18.0-553.140.1.el8_10, 5.14.0-427.139.1.el9_4, 5.14.0-570.129.1.el9_6, 5.14.0-687.22.1.el9_8, 6.12.0-211.30.1.el10_2
kernel-rt (Red Hat package) - addressed in versions 4.18.0-553.140.1.rt7.481.el8_10, 5.14.0-284.183.1.rt14.468.el9_2
kernel-headers - update to 4.18.0-553.141.1.0.1
kernel-debug-modules-extra - update to 4.18.0-553.141.1.0.1
kernel-devel - update to 4.18.0-553.141.1.0.1
bpftool - update to 4.18.0-553.141.1.0.1
kernel - update to 4.18.0-553.141.1.0.1
kernel-core - update to 4.18.0-553.141.1.0.1
kernel-cross-headers - update to 4.18.0-553.141.1.0.1
kernel-debug - update to 4.18.0-553.141.1.0.1
kernel-debug-core - update to 4.18.0-553.141.1.0.1
kernel-debug-devel - update to 4.18.0-553.141.1.0.1
kernel-debug-modules - update to 4.18.0-553.141.1.0.1
kernel-doc - update to 4.18.0-553.141.1.0.1
kernel-abi-stablelists - update to 4.18.0-553.141.1.0.1
python3-perf - update to 4.18.0-553.141.1.0.1
perf - update to 4.18.0-553.141.1.0.1
kernel-tools-libs-devel - update to 4.18.0-553.141.1.0.1
kernel-tools-libs - update to 4.18.0-553.141.1.0.1
kernel-tools - update to 4.18.0-553.141.1.0.1
kernel-modules-extra - update to 4.18.0-553.141.1.0.1
kernel-modules - update to 4.18.0-553.141.1.0.1
kernel-devel - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
kernel - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
bpftool - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
bpftool-debuginfo - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
kernel-debuginfo - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
python3-perf-debuginfo - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
python3-perf - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
python2-perf-debuginfo - update to 4.19.90-2606.3.0.0376
python2-perf - update to 4.19.90-2606.3.0.0376
perf-debuginfo - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
perf - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
kernel-tools-devel - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
kernel-tools-debuginfo - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
kernel-tools - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
kernel-source - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
kernel-debugsource - addressed in versions 4.19.90-2606.3.0.0376, 5.10.0-318.0.0.221
kernel-headers - update to 5.10.0-318.0.0.221
linux (Ubuntu package) - addressed in versions 5.15.0.184.155, 5.15.0-184.194, 5.15.0-184.194~20.04.1, 5.15.0.186.166, 5.15.0-186.196, 5.15.0-186.196~20.04.1, 5.15.0.1075.78, 5.15.0-1075.79, 5.15.0.1095.94, 5.15.0-1095.103, 5.15.0.1104.100, 5.15.0-1104.109, 5.15.0.1108.107, 5.15.0-1108.114, 5.15.0.1111.115, 5.15.0-1111.120+fips1, 5.15.0.1112.102, 5.15.0.1112.109, 5.15.0-1112.122, 5.15.0-1112.122+fips1, 6.8.0-136.136, 6.8.0-1046.50, 6.8.0-1059.67, 6.8.0-1064.72, 6.8.0-1064.72~22.04.1, 6.8.1-1056.57, 6.8.1-1056.57~22.04.2, 7.0.0-28.28, 7.0.0-28.28.1, 7.0.0-1003.4, 7.0.0-1008.8
linux-aws (Ubuntu package) - addressed in versions 5.15.0.186.109, 5.15.0-186.196+fips1, 5.15.0.1106.103, 5.15.0-1106.110, 5.15.0.1107.107, 5.15.0-1107.108, 5.15.0.1112.108, 5.15.0.1112.115, 5.15.0-1112.119, 5.15.0-1112.119+fips1, 5.15.0-1112.119~20.04.1, 6.8.0-1061.64+1, 7.0.0-1009.9, 7.0.0-1015.15
linux-nvidia-tegra (Ubuntu package) - addressed in versions 5.15.0-1053.53, 5.15.0.1053.55, 5.15.0.1064.64, 5.15.0-1064.66
linux-nvidia-tegra-5.15 (Ubuntu package) - update to 5.15.0-1064.66~20.04.1
linux-ibm-5.15 (Ubuntu package) - update to 5.15.0-1106.110~20.04.1
linux-azure (Ubuntu package) - addressed in versions 5.15.0.1109.105, 5.15.0-1109.115, 5.15.0.1117.115, 5.15.0-1117.126, 6.8.0-1063.71, 6.8.0-1063.71~22.04.1, 7.0.0-1009.9, 7.0.0-1010.10
linux-azure-5.15 (Ubuntu package) - addressed in versions 5.15.0-1109.115~20.04.1, 5.15.0-1117.126~20.04.1, 5.15.0-1117.126~20.04.2
linux-azure-fips (Ubuntu package) - addressed in versions 5.15.0.1117.102, 5.15.0-1117.126+fips1, 6.8.0-1063.71+fips2
linux-azure-fde (Ubuntu package) - addressed in versions 5.15.0-1117.126, 6.8.0-1062.69
gfs2-kmp-64kb - update to 6.4.0-150600.23.118.1
dtb-amazon - update to 6.4.0-150600.23.118.1
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.118.1
dtb-renesas - update to 6.4.0-150600.23.118.1
kernel-64kb-extra - update to 6.4.0-150600.23.118.1
dtb-apm - update to 6.4.0-150600.23.118.1
dtb-sprd - update to 6.4.0-150600.23.118.1
dtb-freescale - update to 6.4.0-150600.23.118.1
dtb-apple - update to 6.4.0-150600.23.118.1
reiserfs-kmp-64kb - update to 6.4.0-150600.23.118.1
dtb-amd - update to 6.4.0-150600.23.118.1
kernel-default-livepatch - update to 6.4.0-150600.23.118.1
kernel-64kb-debuginfo - update to 6.4.0-150600.23.118.1
dtb-lg - update to 6.4.0-150600.23.118.1
dtb-cavium - update to 6.4.0-150600.23.118.1
kernel-macros - update to 6.4.0-150600.23.118.1
kselftests-kmp-default - update to 6.4.0-150600.23.118.1
dtb-socionext - update to 6.4.0-150600.23.118.1
dtb-xilinx - update to 6.4.0-150600.23.118.1
dlm-kmp-64kb-debuginfo - update to 6.4.0-150600.23.118.1
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.118.1
dtb-marvell - update to 6.4.0-150600.23.118.1
dlm-kmp-64kb - update to 6.4.0-150600.23.118.1
dtb-allwinner - update to 6.4.0-150600.23.118.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150600.23.118.1
kernel-default-debugsource - update to 6.4.0-150600.23.118.1
kernel-syms - update to 6.4.0-150600.23.118.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.118.1
kernel-obs-build-debugsource - update to 6.4.0-150600.23.118.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150600.23.118.1
kernel-obs-build - update to 6.4.0-150600.23.118.1
dlm-kmp-default - update to 6.4.0-150600.23.118.1
reiserfs-kmp-default - update to 6.4.0-150600.23.118.1
dlm-kmp-default-debuginfo - update to 6.4.0-150600.23.118.1
cluster-md-kmp-default - update to 6.4.0-150600.23.118.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.118.1
kernel-default-livepatch-devel - update to 6.4.0-150600.23.118.1
kernel-default-devel-debuginfo - update to 6.4.0-150600.23.118.1
kernel-default-debuginfo - update to 6.4.0-150600.23.118.1
gfs2-kmp-default - update to 6.4.0-150600.23.118.1
ocfs2-kmp-default - update to 6.4.0-150600.23.118.1
kernel-default-devel - update to 6.4.0-150600.23.118.1
kernel-default - update to 6.4.0-150600.23.118.1
kernel-devel - update to 6.4.0-150600.23.118.1
cluster-md-kmp-64kb - update to 6.4.0-150600.23.118.1
kernel-source - update to 6.4.0-150600.23.118.1
kernel-docs - update to 6.4.0-150600.23.118.1
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.118.1
dtb-arm - update to 6.4.0-150600.23.118.1
dtb-qcom - update to 6.4.0-150600.23.118.1
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.118.1
kernel-default-extra-debuginfo - update to 6.4.0-150600.23.118.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150600.23.118.1
kernel-zfcpdump-debugsource - update to 6.4.0-150600.23.118.1
kselftests-kmp-64kb - update to 6.4.0-150600.23.118.1
kernel-kvmsmall - update to 6.4.0-150600.23.118.1
kernel-docs-html - update to 6.4.0-150600.23.118.1
kernel-source-vanilla - update to 6.4.0-150600.23.118.1
kernel-kvmsmall-debugsource - update to 6.4.0-150600.23.118.1
kernel-kvmsmall-devel - update to 6.4.0-150600.23.118.1
kernel-kvmsmall-devel-debuginfo - update to 6.4.0-150600.23.118.1
kernel-kvmsmall-debuginfo - update to 6.4.0-150600.23.118.1
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.118.1
kernel-zfcpdump - update to 6.4.0-150600.23.118.1
kernel-debug-vdso - update to 6.4.0-150600.23.118.1
kernel-kvmsmall-vdso - update to 6.4.0-150600.23.118.1
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.118.1
kernel-default-vdso - update to 6.4.0-150600.23.118.1
kernel-debug-devel - update to 6.4.0-150600.23.118.1
kernel-debug-debugsource - update to 6.4.0-150600.23.118.1
kernel-debug-debuginfo - update to 6.4.0-150600.23.118.1
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.118.1
kernel-debug - update to 6.4.0-150600.23.118.1
kernel-64kb - update to 6.4.0-150600.23.118.1
dtb-aarch64 - update to 6.4.0-150600.23.118.1
kernel-default-extra - update to 6.4.0-150600.23.118.1
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.118.1
kernel-obs-qa - update to 6.4.0-150600.23.118.1
kernel-default-optional - update to 6.4.0-150600.23.118.1
kernel-64kb-devel - update to 6.4.0-150600.23.118.1
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.118.1
dtb-broadcom - update to 6.4.0-150600.23.118.1
kernel-64kb-optional - update to 6.4.0-150600.23.118.1
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.118.1
dtb-amlogic - update to 6.4.0-150600.23.118.1
dtb-hisilicon - update to 6.4.0-150600.23.118.1
dtb-mediatek - update to 6.4.0-150600.23.118.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150600.23.118.1
dtb-altera - update to 6.4.0-150600.23.118.1
dtb-nvidia - update to 6.4.0-150600.23.118.1
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.118.1
kernel-64kb-debugsource - update to 6.4.0-150600.23.118.1
dtb-exynos - update to 6.4.0-150600.23.118.1
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.118.1
ocfs2-kmp-64kb - update to 6.4.0-150600.23.118.1
dtb-rockchip - update to 6.4.0-150600.23.118.1
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.118.1
kernel-default-base - update to 6.4.0-150600.23.118.1.150600.12.56.1
kernel-default-base-rebuild - update to 6.4.0-150600.23.118.1.150600.12.56.1
linux-fips (Ubuntu package) - addressed in versions 6.8.0-136.136+fips2, 6.8.0-136.136.2, 6.8.0-136.136.2~22.04.1, 6.8.0-1058.61
linux-hwe-6.8 (Ubuntu package) - update to 6.8.0-136.136~22.04.1
linux-ibm (Ubuntu package) - addressed in versions 6.8.0-1030.31, 6.8.0-1033.34, 6.8.0-1061.62, 6.8.0-1061.62~22.04.1, 7.0.0-1008.8, 7.0.0-1010.10
linux-oracle-6.8 (Ubuntu package) - update to 6.8.0-1058.61~22.04.1
linux-nvidia (Ubuntu package) - addressed in versions 6.8.0-1059.62, 6.8.0-1059.62.1, 6.8.0-1059.62~22.04.1
linux-aws-6.8 (Ubuntu package) - addressed in versions 6.8.0-1061.64+fips1, 6.8.0-1061.64~22.04.1
linux-azure-fde-6.8 (Ubuntu package) - update to 6.8.0-1062.69~22.04.1
linux-gcp-fips (Ubuntu package) - update to 6.8.0-1064.72+fips1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1009.9

External References

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