Incorrect calculation in Linux kernel - CVE-2026-90259

Vulnerability identifier: #VU151221

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-90259

CWE-ID: CWE-682

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to cause incorrect freeing of reserved qgroup data.

The vulnerability exists due to an incorrect length calculation in qgroup_free_reserved_data() when freeing reserved qgroup data. A local user can trigger reserved-data range processing to cause incorrect freeing of reserved qgroup data.

Linux kernel
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
Debian Linux
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
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 Enterprise Live Patching
Basesystem Module
SUSE Real Time Module
Development Tools Module
Legacy Module
Public Cloud Module
openSUSE Leap
Ubuntu
linux (Ubuntu package)
linux-oracle (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-ibm (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
kgraft-patch-4_12_14-122_333-default
kernel-livepatch-6_4_0-150600_23_138-default
kernel-livepatch-SLE15-SP6_Update_32-debugsource
kernel-livepatch-6_4_0-150600_23_138-default-debuginfo
kernel-livepatch-SLE15-SP7-RT_Update_21-debugsource
kernel-livepatch-6_4_0-150700_7_78-rt
kernel-livepatch-6_4_0-150700_7_78-rt-debuginfo
kernel-livepatch-6_4_0-150700_53_84-default-debuginfo
kernel-livepatch-SLE15-SP7_Update_22-debugsource
kernel-livepatch-6_4_0-150700_53_84-default
kernel-devel
kernel-default-man
kernel-source
kernel-macros
kernel-default-devel-debuginfo
gfs2-kmp-default
gfs2-kmp-default-debuginfo
kernel-default-devel
ocfs2-kmp-default-debuginfo
kernel-default
cluster-md-kmp-default-debuginfo
kernel-default-kgraft
kernel-default-debugsource
kernel-default-kgraft-devel
kernel-default-debuginfo
dlm-kmp-default
dlm-kmp-default-debuginfo
ocfs2-kmp-default
cluster-md-kmp-default
kernel-default-base-debuginfo
kernel-syms
kernel-default-base
kernel-64kb-optional
dtb-lg
dtb-aarch64
kernel-debug-devel-debuginfo
kernel-debug
kernel-default-livepatch
kernel-default-livepatch-devel
cluster-md-kmp-64kb
kernel-64kb-extra
gfs2-kmp-64kb
kernel-64kb-devel-debuginfo
dlm-kmp-64kb-debuginfo
dtb-exynos
kernel-obs-build-debugsource
dtb-marvell
dtb-xilinx
reiserfs-kmp-64kb-debuginfo
dtb-cavium
dtb-socionext
ocfs2-kmp-64kb
dtb-mediatek
kernel-64kb-devel
kselftests-kmp-64kb
kselftests-kmp-64kb-debuginfo
kernel-64kb-debugsource
kernel-64kb-debuginfo
dtb-renesas
kernel-64kb-extra-debuginfo
dtb-qcom
kernel-64kb-optional-debuginfo
dtb-apm
dtb-arm
dtb-amazon
dtb-hisilicon
kselftests-kmp-default
kernel-default-optional-debuginfo
kernel-default-extra-debuginfo
kernel-default-optional
kselftests-kmp-default-debuginfo
kernel-obs-qa
kernel-default-extra
kernel-64kb
reiserfs-kmp-64kb
gfs2-kmp-64kb-debuginfo
dtb-rockchip
dtb-amd
dtb-sprd
cluster-md-kmp-64kb-debuginfo
ocfs2-kmp-64kb-debuginfo
dtb-nvidia
dtb-freescale
dtb-broadcom
dtb-amlogic
dlm-kmp-64kb
dtb-allwinner
dtb-altera
dtb-apple
kernel-kvmsmall-debuginfo
kernel-debug-debugsource
kernel-debug-debuginfo
kernel-debug-devel
kernel-kvmsmall-vdso
kernel-debug-vdso
kernel-default-vdso-debuginfo
kernel-default-vdso
kernel-debug-vdso-debuginfo
kernel-kvmsmall-vdso-debuginfo
kernel-kvmsmall-devel
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel-debuginfo
kernel-docs-html
kernel-source-vanilla
kernel-kvmsmall
kernel-zfcpdump
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
reiserfs-kmp-default
kernel-docs
reiserfs-kmp-default-debuginfo
kernel-obs-build
kernel-default-base-rebuild
kernel-rt-debugsource
kernel-rt
kernel-devel-rt
kernel-source-rt
ocfs2-kmp-rt
gfs2-kmp-rt-debuginfo
gfs2-kmp-rt
dlm-kmp-rt-debuginfo
cluster-md-kmp-rt
kernel-syms-rt
dlm-kmp-rt
kernel-rt-devel
kernel-rt-devel-debuginfo
kernel-rt-debuginfo
cluster-md-kmp-rt-debuginfo
ocfs2-kmp-rt-debuginfo
kernel-azure-devel-debuginfo
kernel-azure-debuginfo
kernel-azure-devel
kernel-azure-debugsource
kernel-azure
linux (Debian package)

Install security update from vendor's repository.

linux (Ubuntu package) - update to 7.0.0-42.42
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-ibm (Ubuntu package) - update to 7.0.0-1017.17
linux-hwe-7.0 (Ubuntu package) - update to 7.0.0-42.42~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1017.17
kgraft-patch-4_12_14-122_333-default - update to 1-8.3.3
kernel-livepatch-6_4_0-150600_23_138-default - update to 1-150600.13.3.1
kernel-livepatch-SLE15-SP6_Update_32-debugsource - update to 1-150600.13.3.1
kernel-livepatch-6_4_0-150600_23_138-default-debuginfo - update to 1-150600.13.3.1
kernel-livepatch-SLE15-SP7-RT_Update_21-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_78-rt - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_78-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_53_84-default-debuginfo - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_22-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_84-default - update to 1-150700.15.3.1
kernel-devel - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-default-man - update to 4.12.14-122.333.2
kernel-source - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-macros - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
gfs2-kmp-default - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-default-devel - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-default - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-default-kgraft - update to 4.12.14-122.333.2
kernel-default-debugsource - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-default-kgraft-devel - update to 4.12.14-122.333.2
kernel-default-debuginfo - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
dlm-kmp-default - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
ocfs2-kmp-default - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
cluster-md-kmp-default - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-default-base-debuginfo - update to 4.12.14-122.333.2
kernel-syms - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-default-base - addressed in versions 4.12.14-122.333.2, 6.4.0-150600.23.138.1.150600.12.64.1, 6.4.0-150700.53.84.1.150700.17.47.1
kernel-64kb-optional - update to 6.4.0-150600.23.138.1
dtb-lg - update to 6.4.0-150600.23.138.1
dtb-aarch64 - update to 6.4.0-150600.23.138.1
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.138.1
kernel-debug - update to 6.4.0-150600.23.138.1
kernel-default-livepatch - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-default-livepatch-devel - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
cluster-md-kmp-64kb - update to 6.4.0-150600.23.138.1
kernel-64kb-extra - update to 6.4.0-150600.23.138.1
gfs2-kmp-64kb - update to 6.4.0-150600.23.138.1
kernel-64kb-devel-debuginfo - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
dlm-kmp-64kb-debuginfo - update to 6.4.0-150600.23.138.1
dtb-exynos - update to 6.4.0-150600.23.138.1
kernel-obs-build-debugsource - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
dtb-marvell - update to 6.4.0-150600.23.138.1
dtb-xilinx - update to 6.4.0-150600.23.138.1
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.138.1
dtb-cavium - update to 6.4.0-150600.23.138.1
dtb-socionext - update to 6.4.0-150600.23.138.1
ocfs2-kmp-64kb - update to 6.4.0-150600.23.138.1
dtb-mediatek - update to 6.4.0-150600.23.138.1
kernel-64kb-devel - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kselftests-kmp-64kb - update to 6.4.0-150600.23.138.1
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.138.1
kernel-64kb-debugsource - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-64kb-debuginfo - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
dtb-renesas - update to 6.4.0-150600.23.138.1
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.138.1
dtb-qcom - update to 6.4.0-150600.23.138.1
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.138.1
dtb-apm - update to 6.4.0-150600.23.138.1
dtb-arm - update to 6.4.0-150600.23.138.1
dtb-amazon - update to 6.4.0-150600.23.138.1
dtb-hisilicon - update to 6.4.0-150600.23.138.1
kselftests-kmp-default - update to 6.4.0-150600.23.138.1
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.138.1
kernel-default-extra-debuginfo - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-default-optional - update to 6.4.0-150600.23.138.1
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.138.1
kernel-obs-qa - update to 6.4.0-150600.23.138.1
kernel-default-extra - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-64kb - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
reiserfs-kmp-64kb - update to 6.4.0-150600.23.138.1
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.138.1
dtb-rockchip - update to 6.4.0-150600.23.138.1
dtb-amd - update to 6.4.0-150600.23.138.1
dtb-sprd - update to 6.4.0-150600.23.138.1
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.138.1
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.138.1
dtb-nvidia - update to 6.4.0-150600.23.138.1
dtb-freescale - update to 6.4.0-150600.23.138.1
dtb-broadcom - update to 6.4.0-150600.23.138.1
dtb-amlogic - update to 6.4.0-150600.23.138.1
dlm-kmp-64kb - update to 6.4.0-150600.23.138.1
dtb-allwinner - update to 6.4.0-150600.23.138.1
dtb-altera - update to 6.4.0-150600.23.138.1
dtb-apple - update to 6.4.0-150600.23.138.1
kernel-kvmsmall-debuginfo - update to 6.4.0-150600.23.138.1
kernel-debug-debugsource - update to 6.4.0-150600.23.138.1
kernel-debug-debuginfo - update to 6.4.0-150600.23.138.1
kernel-debug-devel - update to 6.4.0-150600.23.138.1
kernel-kvmsmall-vdso - update to 6.4.0-150600.23.138.1
kernel-debug-vdso - update to 6.4.0-150600.23.138.1
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.138.1
kernel-default-vdso - update to 6.4.0-150600.23.138.1
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.138.1
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.138.1
kernel-kvmsmall-devel - update to 6.4.0-150600.23.138.1
kernel-kvmsmall-debugsource - update to 6.4.0-150600.23.138.1
kernel-kvmsmall-devel-debuginfo - update to 6.4.0-150600.23.138.1
kernel-docs-html - update to 6.4.0-150600.23.138.1
kernel-source-vanilla - update to 6.4.0-150600.23.138.1
kernel-kvmsmall - update to 6.4.0-150600.23.138.1
kernel-zfcpdump - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-zfcpdump-debugsource - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-zfcpdump-debuginfo - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
reiserfs-kmp-default - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-docs - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
reiserfs-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-obs-build - addressed in versions 6.4.0-150600.23.138.1, 6.4.0-150700.53.84.1
kernel-default-base-rebuild - update to 6.4.0-150600.23.138.1.150600.12.64.1
kernel-rt-debugsource - update to 6.4.0-150700.7.78.1
kernel-rt - update to 6.4.0-150700.7.78.1
kernel-devel-rt - update to 6.4.0-150700.7.78.1
kernel-source-rt - update to 6.4.0-150700.7.78.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.78.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.78.1
gfs2-kmp-rt - update to 6.4.0-150700.7.78.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.78.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.78.1
kernel-syms-rt - update to 6.4.0-150700.7.78.1
dlm-kmp-rt - update to 6.4.0-150700.7.78.1
kernel-rt-devel - update to 6.4.0-150700.7.78.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.78.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.78.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.78.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.78.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.53.84.1
kernel-azure-debuginfo - update to 6.4.0-150700.53.84.1
kernel-azure-devel - update to 6.4.0-150700.53.84.1
kernel-azure-debugsource - update to 6.4.0-150700.53.84.1
kernel-azure - update to 6.4.0-150700.53.84.1
linux (Debian package) - update to 6.12.115-2

• https://git.kernel.org/stable/c/9102b179512e11644fb0489ae62010a09afa199c
• https://git.kernel.org/stable/c/c4c136555ff90f1e2921cc42da43daac0ef9985e
• https://git.kernel.org/stable/c/e6edde29990af8064b9d12217ec03db231ccd55d

• Incorrect calculation in Linux kernel btrfs
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Debian update for linux
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more