Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-63880
Published: July 20, 2026
Vulnerability identifier: #VU138763
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-63880
CWE-ID: CWE-772
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a lock leak in AMDGPU_GEM_OP_GET_MAPPING_INFO handling in amdgpu_gem_op_ioctl() when processing a crafted DRM_IOCTL_AMDGPU_GEM_OP request that triggers memory allocation failure. A local user can invoke the affected ioctl to cause a denial of service.
Exploitation is reachable by a process with access to /dev/dri/renderD* and affects the caller's GPU context on the same VM.
How to mitigate CVE-2026-63880
Install security update from vendor's repository.