NULL pointer dereference in Linux kernel - CVE-2026-22996

Vulnerability identifier: #VU122023

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-2026-22996

CWE-ID: CWE-476

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the _mlx5e_resume(), mlx5e_resume(), _mlx5e_probe() and _mlx5e_remove() functions in drivers/net/ethernet/mellanox/mlx5/core/en_main.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
Debian Linux
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
Basesystem Module
SUSE Real Time Module
Public Cloud Module
SUSE Linux Enterprise Live Patching
Legacy Module
Development Tools Module
Ubuntu
openEuler
kernel-livepatch-SLE15-SP7-RT_Update_9-debugsource
kernel-livepatch-6_4_0-150700_7_31-rt
kernel-livepatch-6_4_0-150700_7_31-rt-debuginfo
kernel-livepatch-6_4_0-150700_53_31-default-debuginfo
kernel-livepatch-SLE15-SP7_Update_9-debugsource
kernel-livepatch-6_4_0-150700_53_31-default
kernel-source-rt
kernel-devel-rt
kernel-syms-rt
kernel-rt-debugsource
cluster-md-kmp-rt-debuginfo
ocfs2-kmp-rt
kernel-rt-debuginfo
kernel-rt
dlm-kmp-rt
kernel-rt-devel-debuginfo
cluster-md-kmp-rt
kernel-rt-devel
gfs2-kmp-rt
dlm-kmp-rt-debuginfo
ocfs2-kmp-rt-debuginfo
gfs2-kmp-rt-debuginfo
kernel-devel-azure
kernel-source-azure
kernel-azure-devel-debuginfo
kernel-azure-debugsource
kernel-syms-azure
kernel-azure-devel
kernel-azure-debuginfo
kernel-azure
kernel-64kb
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-default-extra-debuginfo
kernel-64kb-debuginfo
kernel-64kb-debugsource
kernel-64kb-devel-debuginfo
kernel-64kb-devel
kernel-default
kernel-default-debugsource
kernel-default-devel-debuginfo
kernel-default-devel
kernel-default-debuginfo
kernel-macros
kernel-devel
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-docs
gfs2-kmp-default-debuginfo
kernel-obs-build-debugsource
kernel-default-extra
dlm-kmp-default-debuginfo
cluster-md-kmp-default
gfs2-kmp-default
ocfs2-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
dlm-kmp-default
ocfs2-kmp-default
reiserfs-kmp-default
reiserfs-kmp-default-debuginfo
kernel-source
kernel-syms
kernel-obs-build
kernel-default-base
kernel-tools
kernel
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-headers
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python3-perf
python3-perf-debuginfo
kernel-extra-modules
linux-fips (Ubuntu package)
linux (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-nvidia-6.8 (Ubuntu package)
linux-azure (Ubuntu package)
linux (Debian package)
linux-azure-fde-6.17 (Ubuntu package)
linux-gcp-6.17 (Ubuntu package)
linux-oracle-6.17 (Ubuntu package)
linux-azure-6.17 (Ubuntu package)
linux-oem-6.17 (Ubuntu package)

Install update from vendor's repository.

kernel-livepatch-SLE15-SP7-RT_Update_9-debugsource - update to 1-150700.1.3.2
kernel-livepatch-6_4_0-150700_7_31-rt - update to 1-150700.1.3.2
kernel-livepatch-6_4_0-150700_7_31-rt-debuginfo - update to 1-150700.1.3.2
kernel-livepatch-6_4_0-150700_53_31-default-debuginfo - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_9-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_31-default - update to 1-150700.15.3.1
kernel-source-rt - update to 6.4.0-150700.7.31.1
kernel-devel-rt - update to 6.4.0-150700.7.31.1
kernel-syms-rt - update to 6.4.0-150700.7.31.1
kernel-rt-debugsource - update to 6.4.0-150700.7.31.2
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.31.2
ocfs2-kmp-rt - update to 6.4.0-150700.7.31.2
kernel-rt-debuginfo - update to 6.4.0-150700.7.31.2
kernel-rt - update to 6.4.0-150700.7.31.2
dlm-kmp-rt - update to 6.4.0-150700.7.31.2
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.31.2
cluster-md-kmp-rt - update to 6.4.0-150700.7.31.2
kernel-rt-devel - update to 6.4.0-150700.7.31.2
gfs2-kmp-rt - update to 6.4.0-150700.7.31.2
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.31.2
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.31.2
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.31.2
kernel-devel-azure - update to 6.4.0-150700.20.27.1
kernel-source-azure - update to 6.4.0-150700.20.27.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.20.27.1
kernel-azure-debugsource - update to 6.4.0-150700.20.27.1
kernel-syms-azure - update to 6.4.0-150700.20.27.1
kernel-azure-devel - update to 6.4.0-150700.20.27.1
kernel-azure-debuginfo - update to 6.4.0-150700.20.27.1
kernel-azure - update to 6.4.0-150700.20.27.1
kernel-64kb - update to 6.4.0-150700.53.31.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.31.1
kernel-default-livepatch - update to 6.4.0-150700.53.31.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.31.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.31.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.31.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.31.1
kernel-64kb-devel - update to 6.4.0-150700.53.31.1
kernel-default - update to 6.4.0-150700.53.31.1
kernel-default-debugsource - update to 6.4.0-150700.53.31.1
kernel-default-devel-debuginfo - update to 6.4.0-150700.53.31.1
kernel-default-devel - update to 6.4.0-150700.53.31.1
kernel-default-debuginfo - update to 6.4.0-150700.53.31.1
kernel-macros - update to 6.4.0-150700.53.31.1
kernel-devel - update to 6.4.0-150700.53.31.1
kernel-zfcpdump - update to 6.4.0-150700.53.31.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.31.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.31.1
kernel-docs - update to 6.4.0-150700.53.31.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.31.1
kernel-default-extra - update to 6.4.0-150700.53.31.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
cluster-md-kmp-default - update to 6.4.0-150700.53.31.1
gfs2-kmp-default - update to 6.4.0-150700.53.31.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
dlm-kmp-default - update to 6.4.0-150700.53.31.1
ocfs2-kmp-default - update to 6.4.0-150700.53.31.1
reiserfs-kmp-default - update to 6.4.0-150700.53.31.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
kernel-source - update to 6.4.0-150700.53.31.1
kernel-syms - update to 6.4.0-150700.53.31.1
kernel-obs-build - update to 6.4.0-150700.53.31.1
kernel-default-base - update to 6.4.0-150700.53.31.1.150700.17.21.1
kernel-tools - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
bpftool - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
bpftool-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-debugsource - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-devel - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-headers - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-tools-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-tools-devel - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
perf - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
perf-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
python3-perf - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
python3-perf-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-source - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-extra-modules - update to 6.6.0-144.0.0.140
linux-fips (Ubuntu package) - update to 6.8.0-116.116+fips1
linux (Ubuntu package) - addressed in versions 6.8.0-117.117, 6.8.0-117.117.1, 6.8.0-117.117.1~22.04.1, 6.8.0-1041.44, 6.8.0-1054.60, 6.8.0-1055.56, 6.8.0-1055.56~22.04.1, 6.8.0-1055.58+fips1, 6.8.0-1056.60, 6.8.0-1058.61, 6.8.0-1058.61+fips1, 6.8.0-2045.46, 6.8.1-1051.52, 6.8.1-1051.52~22.04.1
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1024.24
linux-nvidia (Ubuntu package) - addressed in versions 6.8.0-1054.57, 6.8.0-1054.57.1
linux-nvidia-6.8 (Ubuntu package) - update to 6.8.0-1054.57~22.04.1
linux-azure (Ubuntu package) - update to 6.8.0-1056.62
linux (Debian package) - update to 6.12.69-1
linux-azure-fde-6.17 (Ubuntu package) - update to 6.17.0-1018.18~24.04.1
linux-gcp-6.17 (Ubuntu package) - addressed in versions 6.17.0-1018.20~24.04.1, 6.17.0-1021.24~24.04.1
linux-oracle-6.17 (Ubuntu package) - addressed in versions 6.17.0-1019.19~24.04.3, 6.17.0-1019.19~24.04.3+1
linux-azure-6.17 (Ubuntu package) - update to 6.17.0-1021.21~24.04.1
linux-oem-6.17 (Ubuntu package) - update to 6.17.0-1030.30

• https://git.kernel.org/stable/c/123eda2e5b1638e298e3a66bb1e64a8da92de5e1
• https://git.kernel.org/stable/c/a3d4f87d41f5140f1cf5c02fce5cdad2637f6244
• https://git.kernel.org/stable/c/dcb2ad755a16cb0ecd2dc98234d71a6e216ae7fe

• NULL pointer dereference in Linux kernel mlx5 core driver
• Debian update for linux
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• openEuler 24.03 LTS SP2 update for kernel
• openEuler 24.03 LTS SP1 update for kernel
• openEuler 24.03 LTS update for kernel
• Ubuntu update for linux
• Ubuntu update for linux-nvidia
• Ubuntu update for linux-fips
• Ubuntu update for linux-nvidia-tegra
• Ubuntu update for linux-nvidia-6.8
• Ubuntu update for linux-azure
• Ubuntu update for linux-gcp-6.17
• Ubuntu update for linux-oem-6.17
• Ubuntu update for linux-azure-fde-6.17
• Ubuntu update for linux-azure-6.17
• Ubuntu update for linux-oracle-6.17