CVE-2026-63880

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A lock leak occurs in the amdgpu gem op ioctl() function within the AMDGPU GEM OP GET MAPPING INFO branch. When kvcalloc() fails, the system returns -ENOMEM directly, skipping the necessary cleanup path. This results in the leak of three resources: the drm gem object reference, the drm exec lock on the GEM object, and the drm exec lock on the per-process VM root page directory. The leak of the VM root page directory lock causes subsequent operations on the same VM to block, leading to an unprivileged-local denial of service against the caller's GPU context for any process with /dev/dri/renderD* access. In some cases, this can leave the task in D state (uninterruptible sleep), requiring a system reboot to resolve.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.