Use-after-free in Linux kernel - CVE-2026-99095

Vulnerability identifier: #VU157696

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-2026-99095

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 through a kernel crash.

The vulnerability exists due to use-after-free in the Linux kernel VC4 V3D driver when pending timer and work callbacks execute during device teardown. A local user can exercise GPU job processing that leaves callbacks pending at V3D unbind to potentially trigger access to freed device memory and cause a denial of service.

Linux kernel
SUSE Linux Micro
SUSE Linux Micro Extras
kernel-default
kernel-64kb
kernel-64kb-debugsource
kernel-64kb-devel
kernel-default-devel
kernel-syms
kernel-obs-build
kernel-obs-build-debugsource
kernel-default-debugsource
kernel-default-devel-debuginfo

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel-default - update to 6.4.0-159998.55.1
kernel-64kb - 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-default-devel - update to 6.4.0-159998.55.1
kernel-syms - update to 6.4.0-159998.55.1
kernel-obs-build - update to 6.4.0-159998.55.1
kernel-obs-build-debugsource - update to 6.4.0-159998.55.1
kernel-default-debugsource - update to 6.4.0-159998.55.1
kernel-default-devel-debuginfo - update to 6.4.0-159998.55.1

• https://git.kernel.org/stable/c/17c5fa371de2d5508755cd4cd227cc8e2bb99240
• https://git.kernel.org/stable/c/94cf5971b1d04c6382437387c4dc3836cc7a1437
• https://git.kernel.org/stable/c/a046cd60ff3f4a8c8e672b3b18902682c1f91731
• https://git.kernel.org/stable/c/ade226dfd28cf2fd1dce143c556d1ee77d953696
• https://git.kernel.org/stable/c/e61465d3e0292daebf4dbb34e0add635e2439569

• Use-after-free in Linux kernel drm vc4 driver
• SUSE update for the Linux Kernel