Use-after-free in Linux kernel - CVE-2026-46330

Vulnerability identifier: #VU134168

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-46330

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to use-after-free in the SMC TCP ULP support in net/smc/af_smc.c when converting an active TCP socket into an SMC socket by modifying open-file VFS structures in place. A local user can trigger the flawed socket conversion to cause a denial of service.

The issue stems from in-place modification of struct file, dentry, and inode objects that are expected to remain immutable for an open file.

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 for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Live Patching
Legacy Module
Public Cloud Module
SUSE Real Time Module
Development Tools Module
Basesystem Module
openSUSE Leap
openEuler
kernel-livepatch-SLE15-SP6_Update_29-debugsource
kernel-livepatch-6_4_0-150600_23_125-default
kernel-livepatch-6_4_0-150600_23_125-default-debuginfo
kernel-livepatch-6_4_0-150700_7_67-rt-debuginfo
kernel-livepatch-SLE15-SP7-RT_Update_18-debugsource
kernel-livepatch-6_4_0-150700_7_67-rt
kernel-livepatch-SLE15-SP7_Update_18-debugsource
kernel-livepatch-6_4_0-150700_53_66-default
kernel-livepatch-6_4_0-150700_53_66-default-debuginfo
kernel-livepatch-6_4_0-150700_53_73-default-debuginfo
kernel-livepatch-6_4_0-150700_53_73-default
kernel-livepatch-SLE15-SP7_Update_19-debugsource
reiserfs-kmp-rt-debuginfo
dlm-kmp-rt
kernel-rt-vdso-debuginfo
kernel-rt-vdso
cluster-md-kmp-rt-debuginfo
kernel-rt-devel
kernel-rt-devel-debuginfo
kselftests-kmp-rt-debuginfo
kernel-rt_debug-debugsource
kernel-rt_debug-vdso-debuginfo
kselftests-kmp-rt
kernel-rt-livepatch
kernel-rt-optional-debuginfo
kernel-rt_debug-devel
kernel-rt-optional
kernel-rt_debug-debuginfo
kernel-source-rt
kernel-devel-rt
kernel-rt_debug
kernel-rt
reiserfs-kmp-rt
kernel-rt-livepatch-devel
gfs2-kmp-rt
kernel-rt-debuginfo
kernel-rt-extra
kernel-syms-rt
kernel-rt-extra-debuginfo
ocfs2-kmp-rt-debuginfo
dlm-kmp-rt-debuginfo
cluster-md-kmp-rt
kernel-rt_debug-vdso
gfs2-kmp-rt-debuginfo
kernel-rt_debug-devel-debuginfo
kernel-rt-debugsource
ocfs2-kmp-rt
dtb-socionext
kernel-default-extra-debuginfo
kernel-default-livepatch
kernel-64kb-devel
kernel-default-optional-debuginfo
kselftests-kmp-default
kernel-default-devel
dtb-broadcom
dtb-xilinx
dtb-mediatek
kernel-64kb-extra
ocfs2-kmp-64kb
reiserfs-kmp-64kb-debuginfo
ocfs2-kmp-64kb-debuginfo
kernel-64kb-debugsource
dtb-renesas
dtb-arm
kernel-64kb-devel-debuginfo
dtb-nvidia
dtb-altera
kselftests-kmp-64kb
kernel-64kb-optional
dtb-qcom
cluster-md-kmp-64kb
dtb-hisilicon
gfs2-kmp-64kb-debuginfo
dtb-allwinner
dtb-exynos
kernel-64kb-optional-debuginfo
dlm-kmp-64kb-debuginfo
dtb-rockchip
dtb-freescale
reiserfs-kmp-64kb
dtb-cavium
dtb-apple
dtb-marvell
dtb-apm
dtb-lg
gfs2-kmp-64kb
kselftests-kmp-64kb-debuginfo
dlm-kmp-64kb
dtb-amazon
cluster-md-kmp-64kb-debuginfo
dtb-amlogic
dtb-amd
kernel-64kb-debuginfo
dtb-sprd
kernel-64kb-extra-debuginfo
kernel-debug-debuginfo
kernel-source-vanilla
kernel-macros
kernel-devel
kernel-docs-html
kernel-source
kernel-zfcpdump
kernel-default-livepatch-devel
kernel-kvmsmall
kernel-default
kernel-debug-debugsource
kernel-debug-devel-debuginfo
kernel-debug-devel
dlm-kmp-default
kernel-docs
kernel-64kb
kernel-debug
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-debug-vdso-debuginfo
kernel-kvmsmall-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-default-vdso
kernel-debug-vdso
kernel-default-vdso-debuginfo
dtb-aarch64
ocfs2-kmp-default
reiserfs-kmp-default
kernel-obs-build-debugsource
kernel-default-debugsource
kernel-obs-build
cluster-md-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
kselftests-kmp-default-debuginfo
kernel-syms
kernel-default-optional
dlm-kmp-default-debuginfo
cluster-md-kmp-default
reiserfs-kmp-default-debuginfo
kernel-default-devel-debuginfo
gfs2-kmp-default-debuginfo
kernel-obs-qa
kernel-default-extra
gfs2-kmp-default
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-devel
kernel-kvmsmall-debuginfo
kernel-default-debuginfo
kernel-kvmsmall-debugsource
kernel-default-base-rebuild
kernel-default-base
kernel-azure-devel
kernel-azure-debuginfo
kernel-azure-debugsource
kernel-azure-devel-debuginfo
kernel-azure
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-headers
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel
kernel-extra-modules

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel-livepatch-SLE15-SP6_Update_29-debugsource - update to 1-150600.13.7.1
kernel-livepatch-6_4_0-150600_23_125-default - update to 1-150600.13.7.1
kernel-livepatch-6_4_0-150600_23_125-default-debuginfo - update to 1-150600.13.7.1
kernel-livepatch-6_4_0-150700_7_67-rt-debuginfo - update to 1-150700.1.5.1
kernel-livepatch-SLE15-SP7-RT_Update_18-debugsource - update to 1-150700.1.5.1
kernel-livepatch-6_4_0-150700_7_67-rt - update to 1-150700.1.5.1
kernel-livepatch-SLE15-SP7_Update_18-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_66-default - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_66-default-debuginfo - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_73-default-debuginfo - update to 1-150700.15.3.4
kernel-livepatch-6_4_0-150700_53_73-default - update to 1-150700.15.3.4
kernel-livepatch-SLE15-SP7_Update_19-debugsource - update to 1-150700.15.3.4
reiserfs-kmp-rt-debuginfo - update to 5.14.21-150500.13.151.1
dlm-kmp-rt - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
kernel-rt-vdso-debuginfo - update to 5.14.21-150500.13.151.1
kernel-rt-vdso - update to 5.14.21-150500.13.151.1
cluster-md-kmp-rt-debuginfo - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
kernel-rt-devel - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
kernel-rt-devel-debuginfo - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
kselftests-kmp-rt-debuginfo - update to 5.14.21-150500.13.151.1
kernel-rt_debug-debugsource - update to 5.14.21-150500.13.151.1
kernel-rt_debug-vdso-debuginfo - update to 5.14.21-150500.13.151.1
kselftests-kmp-rt - update to 5.14.21-150500.13.151.1
kernel-rt-livepatch - update to 5.14.21-150500.13.151.1
kernel-rt-optional-debuginfo - update to 5.14.21-150500.13.151.1
kernel-rt_debug-devel - update to 5.14.21-150500.13.151.1
kernel-rt-optional - update to 5.14.21-150500.13.151.1
kernel-rt_debug-debuginfo - update to 5.14.21-150500.13.151.1
kernel-source-rt - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
kernel-devel-rt - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
kernel-rt_debug - update to 5.14.21-150500.13.151.1
kernel-rt - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
reiserfs-kmp-rt - update to 5.14.21-150500.13.151.1
kernel-rt-livepatch-devel - update to 5.14.21-150500.13.151.1
gfs2-kmp-rt - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
kernel-rt-debuginfo - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
kernel-rt-extra - update to 5.14.21-150500.13.151.1
kernel-syms-rt - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
kernel-rt-extra-debuginfo - update to 5.14.21-150500.13.151.1
ocfs2-kmp-rt-debuginfo - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
dlm-kmp-rt-debuginfo - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
cluster-md-kmp-rt - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
kernel-rt_debug-vdso - update to 5.14.21-150500.13.151.1
gfs2-kmp-rt-debuginfo - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
kernel-rt_debug-devel-debuginfo - update to 5.14.21-150500.13.151.1
kernel-rt-debugsource - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
ocfs2-kmp-rt - addressed in versions 5.14.21-150500.13.151.1, 6.4.0-150700.7.67.1
dtb-socionext - update to 6.4.0-150600.23.125.1
kernel-default-extra-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-default-livepatch - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-64kb-devel - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.125.1
kselftests-kmp-default - update to 6.4.0-150600.23.125.1
kernel-default-devel - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
dtb-broadcom - update to 6.4.0-150600.23.125.1
dtb-xilinx - update to 6.4.0-150600.23.125.1
dtb-mediatek - update to 6.4.0-150600.23.125.1
kernel-64kb-extra - update to 6.4.0-150600.23.125.1
ocfs2-kmp-64kb - update to 6.4.0-150600.23.125.1
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.125.1
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.125.1
kernel-64kb-debugsource - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
dtb-renesas - update to 6.4.0-150600.23.125.1
dtb-arm - update to 6.4.0-150600.23.125.1
kernel-64kb-devel-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
dtb-nvidia - update to 6.4.0-150600.23.125.1
dtb-altera - update to 6.4.0-150600.23.125.1
kselftests-kmp-64kb - update to 6.4.0-150600.23.125.1
kernel-64kb-optional - update to 6.4.0-150600.23.125.1
dtb-qcom - update to 6.4.0-150600.23.125.1
cluster-md-kmp-64kb - update to 6.4.0-150600.23.125.1
dtb-hisilicon - update to 6.4.0-150600.23.125.1
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.125.1
dtb-allwinner - update to 6.4.0-150600.23.125.1
dtb-exynos - update to 6.4.0-150600.23.125.1
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.125.1
dlm-kmp-64kb-debuginfo - update to 6.4.0-150600.23.125.1
dtb-rockchip - update to 6.4.0-150600.23.125.1
dtb-freescale - update to 6.4.0-150600.23.125.1
reiserfs-kmp-64kb - update to 6.4.0-150600.23.125.1
dtb-cavium - update to 6.4.0-150600.23.125.1
dtb-apple - update to 6.4.0-150600.23.125.1
dtb-marvell - update to 6.4.0-150600.23.125.1
dtb-apm - update to 6.4.0-150600.23.125.1
dtb-lg - update to 6.4.0-150600.23.125.1
gfs2-kmp-64kb - update to 6.4.0-150600.23.125.1
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.125.1
dlm-kmp-64kb - update to 6.4.0-150600.23.125.1
dtb-amazon - update to 6.4.0-150600.23.125.1
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.125.1
dtb-amlogic - update to 6.4.0-150600.23.125.1
dtb-amd - update to 6.4.0-150600.23.125.1
kernel-64kb-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
dtb-sprd - update to 6.4.0-150600.23.125.1
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.125.1
kernel-debug-debuginfo - update to 6.4.0-150600.23.125.1
kernel-source-vanilla - update to 6.4.0-150600.23.125.1
kernel-macros - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.1
kernel-devel - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.1
kernel-docs-html - update to 6.4.0-150600.23.125.1
kernel-source - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.1
kernel-zfcpdump - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-default-livepatch-devel - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-kvmsmall - update to 6.4.0-150600.23.125.1
kernel-default - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-debug-debugsource - update to 6.4.0-150600.23.125.1
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.125.1
kernel-debug-devel - update to 6.4.0-150600.23.125.1
dlm-kmp-default - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-docs - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.2, 6.4.0-150700.53.73.1
kernel-64kb - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-debug - update to 6.4.0-150600.23.125.1
kernel-zfcpdump-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-zfcpdump-debugsource - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.125.1
kernel-kvmsmall-vdso - update to 6.4.0-150600.23.125.1
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.125.1
kernel-default-vdso - update to 6.4.0-150600.23.125.1
kernel-debug-vdso - update to 6.4.0-150600.23.125.1
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.125.1
dtb-aarch64 - update to 6.4.0-150600.23.125.1
ocfs2-kmp-default - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
reiserfs-kmp-default - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-obs-build-debugsource - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-default-debugsource - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-obs-build - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
cluster-md-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
ocfs2-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.125.1
kernel-syms - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.1
kernel-default-optional - update to 6.4.0-150600.23.125.1
dlm-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
cluster-md-kmp-default - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
reiserfs-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-default-devel-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
gfs2-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-obs-qa - update to 6.4.0-150600.23.125.1
kernel-default-extra - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
gfs2-kmp-default - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-kvmsmall-devel-debuginfo - update to 6.4.0-150600.23.125.1
kernel-kvmsmall-devel - update to 6.4.0-150600.23.125.1
kernel-kvmsmall-debuginfo - update to 6.4.0-150600.23.125.1
kernel-default-debuginfo - addressed in versions 6.4.0-150600.23.125.1, 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-kvmsmall-debugsource - update to 6.4.0-150600.23.125.1
kernel-default-base-rebuild - update to 6.4.0-150600.23.125.1.150600.12.58.3
kernel-default-base - addressed in versions 6.4.0-150600.23.125.1.150600.12.58.3, 6.4.0-150700.53.66.1.150700.17.39.1, 6.4.0-150700.53.73.2.150700.17.41.4
kernel-azure-devel - addressed in versions 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-azure-debuginfo - addressed in versions 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-azure-debugsource - addressed in versions 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-azure-devel-debuginfo - addressed in versions 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
kernel-azure - addressed in versions 6.4.0-150700.53.66.1, 6.4.0-150700.53.73.2
python3-perf-debuginfo - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
python3-perf - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
perf-debuginfo - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
perf - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
kernel-tools-devel - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
kernel-tools-debuginfo - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
kernel-tools - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
kernel-source - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
kernel-headers - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
kernel-devel - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
kernel-debugsource - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
kernel-debuginfo - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
bpftool-debuginfo - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
bpftool - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
kernel - addressed in versions 6.6.0-145.1.19.156, 6.6.0-145.3.17.150
kernel-extra-modules - update to 6.6.0-145.3.17.150

• https://git.kernel.org/stable/c/6c505d95c69e27dbf28fea29dc84d2498d69515c
• https://git.kernel.org/stable/c/df31a6b0a3057e66994ad6ccf5d95b9b9514f033

• Use-after-free in Linux kernel smc
• openEuler 24.03 LTS SP3 update for kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• openEuler 24.03 LTS SP1 update for kernel