CVE-2026-74416

In the Linux kernel, the following vulnerability has been resolved:

drm/radeon: fix memory leak in radeonringrestore() on lock failure

radeonringrestore() takes ownership of the data buffer allocated by radeonringbackup(). The caller (radeongpureset()) only frees it in the non-restore branch; in the restore branch it relies on radeonringrestore() to free it.

If radeonringlock() fails, the function returned early without calling kvfree(data), leaking the ring backup buffer on every GPU reset that fails at the lock stage. During repeated GPU resets this causes cumulative kernel memory exhaustion.

Free data before returning the error.