CVE-2026-74416

A flaw was found in the Linux kernel's drm/radeon component. When a Graphics Processing Unit (GPU) reset operation fails to acquire a necessary lock, a memory buffer is not properly released. Repeated occurrences of this issue can lead to a gradual depletion of kernel memory. This memory exhaustion can ultimately result in a system crash or denial of service.

A flaw was found in the Linux kernel's drm/radeon driver, with low security impact for Red Hat products. When a GPU reset fails to acquire the ring lock, radeon_ring_restore() returns early without freeing the ring backup buffer allocated by radeon_ring_backup(), leaking kernel memory on every reset that fails at the lock stage. A local user able to trigger repeated GPU resets on systems using affected radeon graphics hardware could accumulate these leaks and gradually exhaust kernel memory, ultimately causing a system crash or denial of service. The kernel and kernel-rt components in Red Hat Enterprise Linux 7, 8, 9, and 10, as well as the kernel and kernel-ivos-qualcomm components in Red Hat In-Vehicle OS, are affected; their resolution is currently deferred, so a fix will be delivered in a future planned update rather than immediately, and the residual risk remains a local, low-impact denial of service on systems with affected radeon graphics hardware. Although the CVSS:3.1 base score of 5.5 (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) reflects the high availability impact, Red Hat's overall severity is low because exploitation requires local access and reliable triggering depends on GPU resets failing at the ring-lock stage.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.