Improper control of a resource through its lifetime in Linux kernel - CVE-2026-89987

Vulnerability identifier: #VU150305

CSH Severity: Low

CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-89987

CWE-ID: CWE-664

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to cause silent data loss.

The vulnerability exists due to failure to propagate the PMD dirty bit in zap_huge_pmd_folio() when unmapping a PMD-mapped MAP_SHARED tmpfs mapping after data has been written through a read-faulted mapping. A local user can write data through a shared tmpfs mapping and unmap it to cause silent data loss.

Exploitation requires shmem transparent huge pages and swap to be enabled.

Linux kernel
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 15 SP6
Debian Linux
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 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 Workstation Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Live Patching
Public Cloud Module
Legacy Module
Development Tools Module
Basesystem Module
SUSE Real Time 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_336-default
kernel-livepatch-SLE15-SP6_Update_33-debugsource
kernel-livepatch-6_4_0-150600_23_143-default-debuginfo
kernel-livepatch-6_4_0-150600_23_143-default
kernel-livepatch-SLE15-SP7-RT_Update_22-debugsource
kernel-livepatch-6_4_0-150700_7_81-rt
kernel-livepatch-6_4_0-150700_7_81-rt-debuginfo
kernel-livepatch-6_4_0-150700_53_87-default
kernel-livepatch-6_4_0-150700_53_87-default-debuginfo
kernel-livepatch-SLE15-SP7_Update_23-debugsource
kernel-default-devel-debuginfo
kernel-default-man
kernel-devel
kernel-default
kernel-default-debugsource
kernel-default-kgraft
kernel-macros
kernel-default-kgraft-devel
kernel-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default-devel
dlm-kmp-default
kernel-source
gfs2-kmp-default
ocfs2-kmp-default
dlm-kmp-default-debuginfo
kernel-default-base-debuginfo
kernel-default-base
gfs2-kmp-default-debuginfo
cluster-md-kmp-default
cluster-md-kmp-default-debuginfo
kernel-syms
kernel-64kb-extra
dtb-hisilicon
dtb-arm
dtb-sprd
gfs2-kmp-64kb-debuginfo
ocfs2-kmp-64kb-debuginfo
gfs2-kmp-64kb
dtb-socionext
cluster-md-kmp-64kb
dtb-allwinner
kselftests-kmp-64kb
reiserfs-kmp-64kb
dtb-cavium
dtb-broadcom
dtb-altera
dtb-apple
kernel-64kb-debuginfo
dtb-mediatek
dtb-amazon
kselftests-kmp-64kb-debuginfo
dtb-lg
dtb-exynos
kernel-64kb-optional-debuginfo
kernel-64kb-debugsource
kernel-64kb-devel-debuginfo
reiserfs-kmp-64kb-debuginfo
dtb-freescale
dtb-qcom
dtb-apm
dtb-renesas
kernel-64kb-devel
kernel-kvmsmall-debuginfo
kernel-debug-devel
kernel-kvmsmall-vdso-debuginfo
kernel-kvmsmall-vdso
kernel-debug-vdso
kernel-default-vdso
kernel-default-vdso-debuginfo
kernel-debug-vdso-debuginfo
kernel-kvmsmall-devel-debuginfo
kernel-debug-devel-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel
kernel-source-vanilla
kernel-docs-html
kernel-kvmsmall
kernel-zfcpdump
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-obs-qa
dtb-amlogic
ocfs2-kmp-64kb
cluster-md-kmp-64kb-debuginfo
dtb-rockchip
kernel-default-extra
kselftests-kmp-default-debuginfo
kernel-default-optional
kselftests-kmp-default
dlm-kmp-64kb-debuginfo
kernel-default-extra-debuginfo
kernel-default-optional-debuginfo
dtb-aarch64
kernel-64kb
kernel-debug
kernel-debug-debuginfo
kernel-debug-debugsource
dtb-marvell
dtb-xilinx
reiserfs-kmp-default
kernel-obs-build-debugsource
reiserfs-kmp-default-debuginfo
kernel-obs-build
dtb-nvidia
dtb-amd
kernel-64kb-extra-debuginfo
kernel-64kb-optional
dlm-kmp-64kb
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-docs
kernel-default-base-rebuild
kernel-rt
kernel-source-rt
kernel-devel-rt
dlm-kmp-rt-debuginfo
kernel-syms-rt
gfs2-kmp-rt-debuginfo
ocfs2-kmp-rt-debuginfo
cluster-md-kmp-rt
cluster-md-kmp-rt-debuginfo
kernel-rt-devel-debuginfo
dlm-kmp-rt
kernel-rt-debuginfo
kernel-rt-debugsource
ocfs2-kmp-rt
gfs2-kmp-rt
kernel-rt-devel
kernel-azure-devel
kernel-azure-debuginfo
kernel-azure-devel-debuginfo
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_336-default - update to 1-8.3.1
kernel-livepatch-SLE15-SP6_Update_33-debugsource - update to 1-150600.13.5.1
kernel-livepatch-6_4_0-150600_23_143-default-debuginfo - update to 1-150600.13.5.1
kernel-livepatch-6_4_0-150600_23_143-default - update to 1-150600.13.5.1
kernel-livepatch-SLE15-SP7-RT_Update_22-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_81-rt - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_81-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_53_87-default - update to 1-150700.15.3.2
kernel-livepatch-6_4_0-150700_53_87-default-debuginfo - update to 1-150700.15.3.2
kernel-livepatch-SLE15-SP7_Update_23-debugsource - update to 1-150700.15.3.2
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-default-man - update to 4.12.14-122.336.1
kernel-devel - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-default - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-default-debugsource - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-default-kgraft - update to 4.12.14-122.336.1
kernel-macros - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-default-kgraft-devel - update to 4.12.14-122.336.1
kernel-default-debuginfo - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-default-devel - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
dlm-kmp-default - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-source - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
gfs2-kmp-default - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
ocfs2-kmp-default - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-default-base-debuginfo - update to 4.12.14-122.336.1
kernel-default-base - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1.150600.12.66.3, 6.4.0-150700.53.87.3.150700.17.49.2
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
cluster-md-kmp-default - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-syms - addressed in versions 4.12.14-122.336.1, 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.1
kernel-64kb-extra - update to 6.4.0-150600.23.143.1
dtb-hisilicon - update to 6.4.0-150600.23.143.1
dtb-arm - update to 6.4.0-150600.23.143.1
dtb-sprd - update to 6.4.0-150600.23.143.1
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.143.1
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.143.1
gfs2-kmp-64kb - update to 6.4.0-150600.23.143.1
dtb-socionext - update to 6.4.0-150600.23.143.1
cluster-md-kmp-64kb - update to 6.4.0-150600.23.143.1
dtb-allwinner - update to 6.4.0-150600.23.143.1
kselftests-kmp-64kb - update to 6.4.0-150600.23.143.1
reiserfs-kmp-64kb - update to 6.4.0-150600.23.143.1
dtb-cavium - update to 6.4.0-150600.23.143.1
dtb-broadcom - update to 6.4.0-150600.23.143.1
dtb-altera - update to 6.4.0-150600.23.143.1
dtb-apple - update to 6.4.0-150600.23.143.1
kernel-64kb-debuginfo - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
dtb-mediatek - update to 6.4.0-150600.23.143.1
dtb-amazon - update to 6.4.0-150600.23.143.1
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.143.1
dtb-lg - update to 6.4.0-150600.23.143.1
dtb-exynos - update to 6.4.0-150600.23.143.1
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.143.1
kernel-64kb-debugsource - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-64kb-devel-debuginfo - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.143.1
dtb-freescale - update to 6.4.0-150600.23.143.1
dtb-qcom - update to 6.4.0-150600.23.143.1
dtb-apm - update to 6.4.0-150600.23.143.1
dtb-renesas - update to 6.4.0-150600.23.143.1
kernel-64kb-devel - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-kvmsmall-debuginfo - update to 6.4.0-150600.23.143.1
kernel-debug-devel - update to 6.4.0-150600.23.143.1
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.143.1
kernel-kvmsmall-vdso - update to 6.4.0-150600.23.143.1
kernel-debug-vdso - update to 6.4.0-150600.23.143.1
kernel-default-vdso - update to 6.4.0-150600.23.143.1
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.143.1
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.143.1
kernel-kvmsmall-devel-debuginfo - update to 6.4.0-150600.23.143.1
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.143.1
kernel-kvmsmall-debugsource - update to 6.4.0-150600.23.143.1
kernel-kvmsmall-devel - update to 6.4.0-150600.23.143.1
kernel-source-vanilla - update to 6.4.0-150600.23.143.1
kernel-docs-html - update to 6.4.0-150600.23.143.1
kernel-kvmsmall - update to 6.4.0-150600.23.143.1
kernel-zfcpdump - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-zfcpdump-debugsource - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-zfcpdump-debuginfo - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-obs-qa - update to 6.4.0-150600.23.143.1
dtb-amlogic - update to 6.4.0-150600.23.143.1
ocfs2-kmp-64kb - update to 6.4.0-150600.23.143.1
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.143.1
dtb-rockchip - update to 6.4.0-150600.23.143.1
kernel-default-extra - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.143.1
kernel-default-optional - update to 6.4.0-150600.23.143.1
kselftests-kmp-default - update to 6.4.0-150600.23.143.1
dlm-kmp-64kb-debuginfo - update to 6.4.0-150600.23.143.1
kernel-default-extra-debuginfo - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.143.1
dtb-aarch64 - update to 6.4.0-150600.23.143.1
kernel-64kb - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-debug - update to 6.4.0-150600.23.143.1
kernel-debug-debuginfo - update to 6.4.0-150600.23.143.1
kernel-debug-debugsource - update to 6.4.0-150600.23.143.1
dtb-marvell - update to 6.4.0-150600.23.143.1
dtb-xilinx - update to 6.4.0-150600.23.143.1
reiserfs-kmp-default - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-obs-build-debugsource - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.2
reiserfs-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-obs-build - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.2
dtb-nvidia - update to 6.4.0-150600.23.143.1
dtb-amd - update to 6.4.0-150600.23.143.1
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.143.1
kernel-64kb-optional - update to 6.4.0-150600.23.143.1
dlm-kmp-64kb - update to 6.4.0-150600.23.143.1
kernel-default-livepatch-devel - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-default-livepatch - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-docs - addressed in versions 6.4.0-150600.23.143.1, 6.4.0-150700.53.87.3
kernel-default-base-rebuild - update to 6.4.0-150600.23.143.1.150600.12.66.3
kernel-rt - update to 6.4.0-150700.7.81.1
kernel-source-rt - update to 6.4.0-150700.7.81.1
kernel-devel-rt - update to 6.4.0-150700.7.81.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.81.1
kernel-syms-rt - update to 6.4.0-150700.7.81.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.81.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.81.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.81.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.81.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.81.1
dlm-kmp-rt - update to 6.4.0-150700.7.81.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.81.1
kernel-rt-debugsource - update to 6.4.0-150700.7.81.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.81.1
gfs2-kmp-rt - update to 6.4.0-150700.7.81.1
kernel-rt-devel - update to 6.4.0-150700.7.81.1
kernel-azure-devel - update to 6.4.0-150700.53.87.3
kernel-azure-debuginfo - update to 6.4.0-150700.53.87.3
kernel-azure-devel-debuginfo - update to 6.4.0-150700.53.87.3
kernel-azure-debugsource - update to 6.4.0-150700.53.87.3
kernel-azure - update to 6.4.0-150700.53.87.3
linux (Debian package) - update to 6.12.115-2

• https://git.kernel.org/stable/c/9435cddf1378d149d826bd7bd1448a44bf96868d
• https://git.kernel.org/stable/c/effe3cc6d4fdd407457eb30f7b0ef094393f0d64
• https://git.kernel.org/stable/c/fe6cf984939d8e12cb33a99673c8d026c5135e68

• Improper control of a resource through its lifetime in Linux kernel mm
• 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