Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-80539
Published: August 27, 2026
Vulnerability identifier: #VU145952
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-2026-80539
CWE-ID: CWE-772
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource management in amdgpu_cs_pass1() and amdgpu_cs_p1_user_fence() when processing a submit request containing multiple AMDGPU_CHUNK_ID_FENCE chunks. A local user can submit crafted command stream data with duplicate fence chunks to cause a denial of service.
The leaked buffer object reference can outlive handle close and process exit.
Affected software
Linux kernel
How to mitigate CVE-2026-80539
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/070229262ede37d17c4ea596650deb6e5eb5d106
- https://git.kernel.org/stable/c/5f46322e0b84af29e10eb951ff45bd6ea40640de
- https://git.kernel.org/stable/c/71aa45f7bfe46fbc6f51e7832573ff49b6005fea
- https://git.kernel.org/stable/c/931cd1d1baeae68e8eb2c23bc1f3d8934dca6241
- https://git.kernel.org/stable/c/e3ee74d6dbbe409eb99546a7b0a02b2782f9021d