Double free in Linux kernel - CVE-2026-89870

Vulnerability identifier: #VU150410

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-89870

CWE-ID: CWE-415

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to cause memory corruption.

The vulnerability exists due to a double free in zoran_exit_video_devices() when unregistering a registered video device during device teardown. A local user can trigger device teardown to cause memory corruption.

Linux kernel
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
Debian Linux
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Live Patching
Ubuntu
linux (Ubuntu package)
linux-aws (Ubuntu package)
linux-oracle (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_333-default
kernel-default
kernel-default-man
kernel-devel
kernel-source
kernel-macros
kernel-default-devel-debuginfo
gfs2-kmp-default
gfs2-kmp-default-debuginfo
kernel-default-devel
ocfs2-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
kernel-default-base
kernel-default-base-debuginfo
kernel-default-kgraft
kernel-default-debugsource
kernel-default-kgraft-devel
kernel-default-debuginfo
dlm-kmp-default
dlm-kmp-default-debuginfo
ocfs2-kmp-default
cluster-md-kmp-default
kernel-syms
linux (Debian package)

Install security update from vendor's repository.

linux (Ubuntu package) - update to 7.0.0-42.42
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
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_333-default - update to 1-8.3.3
kernel-default - update to 4.12.14-122.333.2
kernel-default-man - update to 4.12.14-122.333.2
kernel-devel - update to 4.12.14-122.333.2
kernel-source - update to 4.12.14-122.333.2
kernel-macros - update to 4.12.14-122.333.2
kernel-default-devel-debuginfo - update to 4.12.14-122.333.2
gfs2-kmp-default - update to 4.12.14-122.333.2
gfs2-kmp-default-debuginfo - update to 4.12.14-122.333.2
kernel-default-devel - update to 4.12.14-122.333.2
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.333.2
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.333.2
kernel-default-base - update to 4.12.14-122.333.2
kernel-default-base-debuginfo - update to 4.12.14-122.333.2
kernel-default-kgraft - update to 4.12.14-122.333.2
kernel-default-debugsource - update to 4.12.14-122.333.2
kernel-default-kgraft-devel - update to 4.12.14-122.333.2
kernel-default-debuginfo - update to 4.12.14-122.333.2
dlm-kmp-default - update to 4.12.14-122.333.2
dlm-kmp-default-debuginfo - update to 4.12.14-122.333.2
ocfs2-kmp-default - update to 4.12.14-122.333.2
cluster-md-kmp-default - update to 4.12.14-122.333.2
kernel-syms - update to 4.12.14-122.333.2
linux (Debian package) - update to 6.12.111-1

• https://git.kernel.org/stable/c/0735e0b5a96761a9ce277a238e834008ad92a0a5
• https://git.kernel.org/stable/c/3ad6cf27505017a6794f5f96c31218c2291e951b
• https://git.kernel.org/stable/c/4d99d8d0d895489064783601a516bd45812fa992
• https://git.kernel.org/stable/c/672dbccf4351370dad002d3c78dbb29ca1588f22
• https://git.kernel.org/stable/c/c4acac8cdc005b2d14b6cef5e215d264212857f3
• https://git.kernel.org/stable/c/f1c4f3885df1f09bcab5296d86834d104f865e86

• Double free in Linux kernel pci zoran driver
• Debian update for linux
• SUSE update for the Linux Kernel
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more