Improper control of a resource through its lifetime in Linux kernel - CVE-2026-43362

Vulnerability identifier: #VU130814

CSH Severity: Medium

CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-43362

CWE-ID: CWE-664

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote user to corrupt data.

The vulnerability exists due to improper handling of in-place encryption in SMB2_write() when retrying write operations after replayable errors. A remote user can trigger write retries over an unstable SMB connection to corrupt data.

The issue is most likely to be observed when unstable connections cause reconnects and repeated write attempts.

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
SUSE Linux Enterprise Live Patching
openSUSE Leap
Ubuntu
Anolis OS
kernel-livepatch-6_4_0-150600_23_115-default
kernel-livepatch-6_4_0-150600_23_115-default-debuginfo
kernel-livepatch-SLE15-SP6_Update_27-debugsource
kernel-default-extra-debuginfo
cluster-md-kmp-default-debuginfo
reiserfs-kmp-default
ocfs2-kmp-default-debuginfo
dlm-kmp-default
reiserfs-kmp-default-debuginfo
ocfs2-kmp-default
kernel-default-devel-debuginfo
cluster-md-kmp-default
kernel-default-debuginfo
kernel-syms
kernel-default-optional
gfs2-kmp-default-debuginfo
kernel-default-extra
kernel-macros
kernel-default-livepatch
kselftests-kmp-default
kernel-default-optional-debuginfo
gfs2-kmp-default
kselftests-kmp-default-debuginfo
dlm-kmp-default-debuginfo
kernel-default-devel
kernel-default-debugsource
kernel-obs-build-debugsource
kernel-default-vdso-debuginfo
dtb-aarch64
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-zfcpdump
kernel-kvmsmall
kernel-default-livepatch-devel
kernel-default-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-debug-vdso
kernel-debug-vdso-debuginfo
kernel-kvmsmall-vdso
kernel-default
kernel-debug-devel-debuginfo
kernel-debug-debuginfo
kernel-debug-devel
kernel-debug-debugsource
kernel-debug
kernel-source-vanilla
kernel-source
kernel-devel
kernel-docs-html
dtb-allwinner
kernel-docs
cluster-md-kmp-64kb-debuginfo
dtb-amazon
kernel-64kb-extra
kernel-64kb-optional-debuginfo
kernel-64kb-extra-debuginfo
dtb-amd
kselftests-kmp-64kb-debuginfo
kernel-64kb-devel
dtb-exynos
dtb-renesas
dtb-marvell
ocfs2-kmp-64kb
gfs2-kmp-64kb
kernel-obs-qa
dtb-lg
dtb-qcom
kernel-64kb-debugsource
kernel-64kb-devel-debuginfo
dtb-cavium
dtb-hisilicon
dlm-kmp-64kb-debuginfo
dtb-freescale
dtb-rockchip
gfs2-kmp-64kb-debuginfo
dlm-kmp-64kb
dtb-apm
dtb-altera
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debuginfo
kernel-kvmsmall-devel
kernel-obs-build
kernel-64kb-optional
kernel-64kb
dtb-nvidia
dtb-sprd
dtb-arm
kselftests-kmp-64kb
kernel-64kb-debuginfo
reiserfs-kmp-64kb
dtb-broadcom
dtb-socionext
cluster-md-kmp-64kb
dtb-amlogic
ocfs2-kmp-64kb-debuginfo
dtb-mediatek
dtb-apple
dtb-xilinx
reiserfs-kmp-64kb-debuginfo
kernel-default-base
kernel-default-base-rebuild
python3-perf
perf
kernel-tools-libs-devel
kernel-tools-libs
kernel-tools
kernel-headers
kernel
bpftool
linux (Ubuntu package)
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-aws (Ubuntu package)
linux-gcp-fips (Ubuntu package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel-livepatch-6_4_0-150600_23_115-default - update to 1-150600.13.3.1
kernel-livepatch-6_4_0-150600_23_115-default-debuginfo - update to 1-150600.13.3.1
kernel-livepatch-SLE15-SP6_Update_27-debugsource - update to 1-150600.13.3.1
kernel-default-extra-debuginfo - update to 6.4.0-150600.23.115.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150600.23.115.1
reiserfs-kmp-default - update to 6.4.0-150600.23.115.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.115.1
dlm-kmp-default - update to 6.4.0-150600.23.115.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150600.23.115.1
ocfs2-kmp-default - update to 6.4.0-150600.23.115.1
kernel-default-devel-debuginfo - update to 6.4.0-150600.23.115.1
cluster-md-kmp-default - update to 6.4.0-150600.23.115.1
kernel-default-debuginfo - update to 6.4.0-150600.23.115.1
kernel-syms - update to 6.4.0-150600.23.115.1
kernel-default-optional - update to 6.4.0-150600.23.115.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.115.1
kernel-default-extra - update to 6.4.0-150600.23.115.1
kernel-macros - update to 6.4.0-150600.23.115.1
kernel-default-livepatch - update to 6.4.0-150600.23.115.1
kselftests-kmp-default - update to 6.4.0-150600.23.115.1
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.115.1
gfs2-kmp-default - update to 6.4.0-150600.23.115.1
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.115.1
dlm-kmp-default-debuginfo - update to 6.4.0-150600.23.115.1
kernel-default-devel - update to 6.4.0-150600.23.115.1
kernel-default-debugsource - update to 6.4.0-150600.23.115.1
kernel-obs-build-debugsource - update to 6.4.0-150600.23.115.1
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.115.1
dtb-aarch64 - update to 6.4.0-150600.23.115.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150600.23.115.1
kernel-zfcpdump-debugsource - update to 6.4.0-150600.23.115.1
kernel-zfcpdump - update to 6.4.0-150600.23.115.1
kernel-kvmsmall - update to 6.4.0-150600.23.115.1
kernel-default-livepatch-devel - update to 6.4.0-150600.23.115.1
kernel-default-vdso - update to 6.4.0-150600.23.115.1
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.115.1
kernel-debug-vdso - update to 6.4.0-150600.23.115.1
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.115.1
kernel-kvmsmall-vdso - update to 6.4.0-150600.23.115.1
kernel-default - update to 6.4.0-150600.23.115.1
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.115.1
kernel-debug-debuginfo - update to 6.4.0-150600.23.115.1
kernel-debug-devel - update to 6.4.0-150600.23.115.1
kernel-debug-debugsource - update to 6.4.0-150600.23.115.1
kernel-debug - update to 6.4.0-150600.23.115.1
kernel-source-vanilla - update to 6.4.0-150600.23.115.1
kernel-source - update to 6.4.0-150600.23.115.1
kernel-devel - update to 6.4.0-150600.23.115.1
kernel-docs-html - update to 6.4.0-150600.23.115.1
dtb-allwinner - update to 6.4.0-150600.23.115.1
kernel-docs - update to 6.4.0-150600.23.115.1
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.115.1
dtb-amazon - update to 6.4.0-150600.23.115.1
kernel-64kb-extra - update to 6.4.0-150600.23.115.1
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.115.1
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.115.1
dtb-amd - update to 6.4.0-150600.23.115.1
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.115.1
kernel-64kb-devel - update to 6.4.0-150600.23.115.1
dtb-exynos - update to 6.4.0-150600.23.115.1
dtb-renesas - update to 6.4.0-150600.23.115.1
dtb-marvell - update to 6.4.0-150600.23.115.1
ocfs2-kmp-64kb - update to 6.4.0-150600.23.115.1
gfs2-kmp-64kb - update to 6.4.0-150600.23.115.1
kernel-obs-qa - update to 6.4.0-150600.23.115.1
dtb-lg - update to 6.4.0-150600.23.115.1
dtb-qcom - update to 6.4.0-150600.23.115.1
kernel-64kb-debugsource - update to 6.4.0-150600.23.115.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150600.23.115.1
dtb-cavium - update to 6.4.0-150600.23.115.1
dtb-hisilicon - update to 6.4.0-150600.23.115.1
dlm-kmp-64kb-debuginfo - update to 6.4.0-150600.23.115.1
dtb-freescale - update to 6.4.0-150600.23.115.1
dtb-rockchip - update to 6.4.0-150600.23.115.1
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.115.1
dlm-kmp-64kb - update to 6.4.0-150600.23.115.1
dtb-apm - update to 6.4.0-150600.23.115.1
dtb-altera - update to 6.4.0-150600.23.115.1
kernel-kvmsmall-debugsource - update to 6.4.0-150600.23.115.1
kernel-kvmsmall-devel-debuginfo - update to 6.4.0-150600.23.115.1
kernel-kvmsmall-debuginfo - update to 6.4.0-150600.23.115.1
kernel-kvmsmall-devel - update to 6.4.0-150600.23.115.1
kernel-obs-build - update to 6.4.0-150600.23.115.1
kernel-64kb-optional - update to 6.4.0-150600.23.115.1
kernel-64kb - update to 6.4.0-150600.23.115.1
dtb-nvidia - update to 6.4.0-150600.23.115.1
dtb-sprd - update to 6.4.0-150600.23.115.1
dtb-arm - update to 6.4.0-150600.23.115.1
kselftests-kmp-64kb - update to 6.4.0-150600.23.115.1
kernel-64kb-debuginfo - update to 6.4.0-150600.23.115.1
reiserfs-kmp-64kb - update to 6.4.0-150600.23.115.1
dtb-broadcom - update to 6.4.0-150600.23.115.1
dtb-socionext - update to 6.4.0-150600.23.115.1
cluster-md-kmp-64kb - update to 6.4.0-150600.23.115.1
dtb-amlogic - update to 6.4.0-150600.23.115.1
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.115.1
dtb-mediatek - update to 6.4.0-150600.23.115.1
dtb-apple - update to 6.4.0-150600.23.115.1
dtb-xilinx - update to 6.4.0-150600.23.115.1
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.115.1
kernel-default-base - update to 6.4.0-150600.23.115.1.150600.12.54.1
kernel-default-base-rebuild - update to 6.4.0-150600.23.115.1.150600.12.54.1
python3-perf - update to 6.6.102-6
perf - update to 6.6.102-6
kernel-tools-libs-devel - update to 6.6.102-6
kernel-tools-libs - update to 6.6.102-6
kernel-tools - update to 6.6.102-6
kernel-headers - update to 6.6.102-6
kernel-devel - update to 6.6.102-6
kernel-debug-devel - update to 6.6.102-6
kernel-debug - update to 6.6.102-6
kernel - update to 6.6.102-6
bpftool - update to 6.6.102-6
linux (Ubuntu package) - addressed in versions 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
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
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-aws (Ubuntu package) - update to 6.8.0-1061.64+1
linux-gcp-fips (Ubuntu package) - update to 6.8.0-1064.72+fips1

• https://git.kernel.org/stable/c/438e77435aee2894d5edf90be5c87004a57f6258
• https://git.kernel.org/stable/c/52327268224fb9ccc7ecfbbdfdfff54b6e93c518
• https://git.kernel.org/stable/c/92e64f1852f455f57d0850989e57c30d7fac7d95
• https://git.kernel.org/stable/c/aea5e37388a080361110ab5790f57ae0af383650
• https://git.kernel.org/stable/c/d78840a6a38d312dc1a51a65317bb67e46f0b929

• Improper control of a resource through its lifetime in Linux kernel smb client
• SUSE update for the Linux Kernel
• Ubuntu update for linux
• Ubuntu update for linux-gcp-fips
• Ubuntu update for linux-oracle-6.8
• Ubuntu update for linux-fips
• Ubuntu update for linux-nvidia
• Ubuntu update for linux-aws
• Ubuntu update for linux-hwe-6.8
• Ubuntu update for linux-aws-6.8
• Ubuntu update for linux-ibm
• Anolis OS update for kernel:6.6