Use-after-free in Linux kernel - CVE-2026-93192

Vulnerability identifier: #VU151437

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-2026-93192

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to compromise system confidentiality, integrity, and availability.

The vulnerability exists due to failure to clear a dangling active-job pointer in the Linux kernel V3D driver's BIN, RENDER, TFU, and CSD job execution callbacks when v3d_fence_create() fails during job execution. A local user can exploit the stale queue->active_job reference to compromise system confidentiality, integrity, and availability.

The BIN queue's active-job reference can also be accessed concurrently by v3d_overflow_mem_work().

Linux kernel
Debian Linux
Ubuntu
linux (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oracle (Ubuntu package)
linux-ibm (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
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-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
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
linux (Debian package) - update to 6.12.111-1

• https://git.kernel.org/stable/c/0b9878aba5cf93bc2b55ba9eb807757ce3239bec
• https://git.kernel.org/stable/c/25a1669907512e927fab9ad4d4fb74ff57f63cd9
• https://git.kernel.org/stable/c/3a8aa74859dd73eaa76c55eb74da708e56ef51c5
• https://git.kernel.org/stable/c/bdeb73d7312100e00c3e643ff233f09b6ec114aa

• Use-after-free in Linux kernel drm v3d driver
• Debian update for linux
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more