In the Linux kernel, the following vulnerability has been resolved: drm/sun4i: backend: fix error pointer dereference The function drm_atomic_get_plane_state() can return an error pointer and is not checked for it. Add error pointer check. Detected by Smatch: drivers/gpu/drm/sun4i/sun4i_backend.c:496 sun4i_backend_atomic_check() error: 'plane_state' dereferencing possible ERR_PTR()

A flaw was found in the Linux kernel's `drm/sun4i` backend component. This vulnerability occurs because the `drm_atomic_get_plane_state()` function can return an error pointer, which is not properly checked before being dereferenced. An attacker could potentially trigger this unchecked dereference, leading to a system crash or instability (Denial of Service).

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-53066 https://nvd.nist.gov/vuln/detail/CVE-2026-53066 https://lore.kernel.org/linux-cve-announce/2026062403-CVE-2026-53066-d2e5@gregkh/T