SB20260720348 - Missing Release of Resource after Effective Lifetime in Linux kernel amd amdgpu driver

Description

This security bulletin contains information about 1 vulnerability.

1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-63880)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 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]

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.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/1eb86334e391695d4a40743b114afc15df4dc506
• https://git.kernel.org/stable/c/2e7f55eb408c3f72ee1957a0d0ad11d8648a6379
• https://git.kernel.org/stable/c/8f643d534ffc6f1b6182e4f3acff8f04890504b9