Use-after-free in Linux kernel - CVE-2026-98014

Vulnerability identifier: #VU152465

CSH Severity: Low

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

CVE-ID: CVE-2026-98014

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 improper cleanup ordering in the mlx5 E-Switch vport disable path when handling firmware-fatal recovery. A local user can trigger a PCI device reset to cause a denial of service.

Linux kernel
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
Debian Linux
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Micro Extras
SUSE Linux Micro
SUSE Linux Enterprise Live Patching
Ubuntu
linux (Ubuntu package)
linux-kvm (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-azure (Ubuntu package)
linux-raspi (Ubuntu package)
linux-oracle (Ubuntu package)
linux-lowlatency (Ubuntu package)
linux-gke (Ubuntu package)
linux-aws-5.15 (Ubuntu package)
linux-lowlatency-hwe-5.15 (Ubuntu package)
linux-hwe-5.15 (Ubuntu package)
linux-fips (Ubuntu package)
linux-azure-5.15 (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-gkeop (Ubuntu package)
linux-azure-fde-5.15 (Ubuntu package)
linux-realtime (Ubuntu package)
linux-nvidia-tegra-igx (Ubuntu package)
linux-intel-iotg (Ubuntu package)
linux-ibm-5.15 (Ubuntu package)
linux-ibm (Ubuntu package)
linux-intel-iotg-5.15 (Ubuntu package)
linux-oracle-5.15 (Ubuntu package)
linux-gcp-5.15 (Ubuntu package)
linux-nvidia-tegra-5.15 (Ubuntu package)
linux-azure-fde (Ubuntu package)
linux-intel-iot-realtime (Ubuntu package)
linux-gcp-fips (Ubuntu package)
linux-aws-fips (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-lowlatency-hwe-6.8 (Ubuntu package)
linux-azure-fde-6.8 (Ubuntu package)
linux-azure-6.8 (Ubuntu package)
linux-oracle-6.8 (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-vmware (Ubuntu package)
linux-ibm-6.8 (Ubuntu package)
linux-gcp-6.8 (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-realtime-6.8 (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-azure-fde-7.0 (Ubuntu package)
linux-gcp-7.0 (Ubuntu package)
linux-oracle-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
linux-aws-7.0 (Ubuntu package)
kgraft-patch-4_12_14-122_339-default
kernel-default-man
kernel-default
kernel-default-debuginfo
kernel-default-debugsource
kernel-default-kgraft
kernel-default-kgraft-devel
cluster-md-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-syms
dlm-kmp-default-debuginfo
kernel-default-devel
dlm-kmp-default
kernel-default-base-debuginfo
kernel-default-base
gfs2-kmp-default-debuginfo
ocfs2-kmp-default
gfs2-kmp-default
cluster-md-kmp-default
kernel-default-devel-debuginfo
kernel-source
kernel-macros
kernel-devel
kernel-64kb
kernel-obs-build-debugsource
kernel-64kb-debugsource
kernel-64kb-devel
kernel-obs-build
linux (Debian package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux (Ubuntu package) - addressed in versions 5.15.0-202.212, 6.8.0-149.149, 7.0.0-42.42
linux-kvm (Ubuntu package) - update to 5.15.0-1111.116
linux-aws (Ubuntu package) - addressed in versions 5.15.0-1119.126, 6.8.0-1069.74, 7.0.0-1016.17
linux-gcp (Ubuntu package) - addressed in versions 5.15.0-1120.130, 6.8.0-1073.81, 7.0.0-1016.18
linux-azure (Ubuntu package) - addressed in versions 5.15.0-1125.134, 6.8.0-1073.82, 7.0.0-1020.21
linux-raspi (Ubuntu package) - addressed in versions 5.15.0-1113.116, 6.8.0-1068.72, 7.0.0-1023.23
linux-oracle (Ubuntu package) - addressed in versions 5.15.0-1116.122, 6.8.0-1067.71, 7.0.0-1015.16
linux-lowlatency (Ubuntu package) - addressed in versions 5.15.0-197.207, 6.8.0-149.149.1
linux-gke (Ubuntu package) - addressed in versions 5.15.0-1115.121, 6.8.0-1068.77, 7.0.0-1010.11
linux-aws-5.15 (Ubuntu package) - update to 5.15.0-1119.126~20.04.1
linux-lowlatency-hwe-5.15 (Ubuntu package) - update to 5.15.0-197.207~20.04.1
linux-hwe-5.15 (Ubuntu package) - update to 5.15.0-202.212~20.04.1
linux-fips (Ubuntu package) - update to 5.15.0-202.212+fips1
linux-azure-5.15 (Ubuntu package) - update to 5.15.0-1125.134~20.04.1
linux-nvidia (Ubuntu package) - addressed in versions 5.15.0-1114.115, 6.8.0-1067.70
linux-nvidia-tegra (Ubuntu package) - update to 5.15.0-1070.72
linux-gkeop (Ubuntu package) - addressed in versions 5.15.0-1102.110, 6.8.0-1053.57
linux-azure-fde-5.15 (Ubuntu package) - update to 5.15.0-1124.133~20.04.1
linux-realtime (Ubuntu package) - addressed in versions 5.15.0-1118.127, 6.8.1-1064.65, 7.0.0-43.43.1
linux-nvidia-tegra-igx (Ubuntu package) - update to 5.15.0-1059.59
linux-intel-iotg (Ubuntu package) - update to 5.15.0-1114.120
linux-ibm-5.15 (Ubuntu package) - update to 5.15.0-1113.117~20.04.1
linux-ibm (Ubuntu package) - addressed in versions 5.15.0-1113.117, 6.8.0-1069.70, 7.0.0-1017.17
linux-intel-iotg-5.15 (Ubuntu package) - update to 5.15.0-1114.120~20.04.1
linux-oracle-5.15 (Ubuntu package) - update to 5.15.0-1116.122~20.04.1
linux-gcp-5.15 (Ubuntu package) - update to 5.15.0-1120.130~20.04.1
linux-nvidia-tegra-5.15 (Ubuntu package) - update to 5.15.0-1070.72~20.04.1
linux-azure-fde (Ubuntu package) - addressed in versions 5.15.0-1124.133, 7.0.0-1019.19
linux-intel-iot-realtime (Ubuntu package) - update to 5.15.0-1111.115
linux-gcp-fips (Ubuntu package) - addressed in versions 5.15.0-1120.130+fips1, 6.8.0-1073.81+fips1
linux-aws-fips (Ubuntu package) - addressed in versions 5.15.0-1119.126+fips1, 6.8.0-1069.74+fips1
linux-azure-fips (Ubuntu package) - addressed in versions 5.15.0-1125.134+fips1, 6.8.0-1073.82+fips1
linux-lowlatency-hwe-6.8 (Ubuntu package) - update to 6.8.0-149.149.1~22.04.1
linux-azure-fde-6.8 (Ubuntu package) - update to 6.8.0-1071.78~22.04.1
linux-azure-6.8 (Ubuntu package) - update to 6.8.0-1073.82~22.04.1
linux-oracle-6.8 (Ubuntu package) - update to 6.8.0-1067.71~22.04.1
linux-aws-6.8 (Ubuntu package) - update to 6.8.0-1069.74~22.04.1
linux-vmware (Ubuntu package) - update to 6.8.0-1010.10
linux-ibm-6.8 (Ubuntu package) - update to 6.8.0-1069.70~22.04.1
linux-gcp-6.8 (Ubuntu package) - update to 6.8.0-1073.81~22.04.1
linux-raspi-realtime (Ubuntu package) - update to 6.8.0-2056.58
linux-realtime-6.8 (Ubuntu package) - update to 6.8.1-1064.65~22.04.1
linux-hwe-7.0 (Ubuntu package) - update to 7.0.0-42.42~24.04.1
linux-azure-fde-7.0 (Ubuntu package) - update to 7.0.0-1019.19~24.04.1
linux-gcp-7.0 (Ubuntu package) - update to 7.0.0-1017.19~24.04.1
linux-oracle-7.0 (Ubuntu package) - update to 7.0.0-1016.18~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1017.17
linux-aws-7.0 (Ubuntu package) - update to 7.0.0-1017.18~24.04.1
kgraft-patch-4_12_14-122_339-default - update to 1-8.3.1
kernel-default-man - update to 4.12.14-122.339.1
kernel-default - addressed in versions 4.12.14-122.339.1, 6.4.0-159998.55.1
kernel-default-debuginfo - update to 4.12.14-122.339.1
kernel-default-debugsource - addressed in versions 4.12.14-122.339.1, 6.4.0-159998.55.1
kernel-default-kgraft - update to 4.12.14-122.339.1
kernel-default-kgraft-devel - update to 4.12.14-122.339.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.339.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.339.1
kernel-syms - addressed in versions 4.12.14-122.339.1, 6.4.0-159998.55.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.339.1
kernel-default-devel - addressed in versions 4.12.14-122.339.1, 6.4.0-159998.55.1
dlm-kmp-default - update to 4.12.14-122.339.1
kernel-default-base-debuginfo - update to 4.12.14-122.339.1
kernel-default-base - update to 4.12.14-122.339.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.339.1
ocfs2-kmp-default - update to 4.12.14-122.339.1
gfs2-kmp-default - update to 4.12.14-122.339.1
cluster-md-kmp-default - update to 4.12.14-122.339.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.339.1, 6.4.0-159998.55.1
kernel-source - update to 4.12.14-122.339.1
kernel-macros - update to 4.12.14-122.339.1
kernel-devel - update to 4.12.14-122.339.1
kernel-64kb - update to 6.4.0-159998.55.1
kernel-obs-build-debugsource - update to 6.4.0-159998.55.1
kernel-64kb-debugsource - update to 6.4.0-159998.55.1
kernel-64kb-devel - update to 6.4.0-159998.55.1
kernel-obs-build - update to 6.4.0-159998.55.1
linux (Debian package) - update to 6.12.111-1

• https://git.kernel.org/stable/c/668e050429c7ca688cf4e7112f97f0cd269d446b
• https://git.kernel.org/stable/c/69904608e25e8ba58111aadd9210892cf3876201
• https://git.kernel.org/stable/c/72cfcb79026cffb6490f5044153a841d360b0cfc
• https://git.kernel.org/stable/c/c0c6f4ba8a37688f7b4d4044898d88f0450d44c2

• Use-after-free in Linux kernel mlx5 core driver
• Debian update for linux
• Ubuntu update for linux-azure-fde
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more
• Ubuntu update for linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx
• Ubuntu update for linux, linux-aws, linux-aws-5.15 and more
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Ubuntu update for linux-azure
• Ubuntu update for linux-aws-7.0, linux-azure-fde, linux-azure-fde-7.0 and more
• Ubuntu update for linux-aws-fips, linux-gcp-fips, linux-gkeop and more
• Ubuntu update for linux-raspi
• Ubuntu update for linux-azure-6.8, linux-azure-fde-6.8
• Ubuntu update for linux-oracle-6.8, linux-raspi, linux-raspi-realtime
• Ubuntu update for linux-aws-6.8, linux-gcp-6.8, linux-ibm-6.8 and more
• Ubuntu update for linux, linux-aws, linux-azure and more
• Ubuntu update for linux-raspi