CVE-2026-53285
kernel: drm/amd/display: Wrap DCN32 phantom-plane allocation in DC_RUN_WITH_PREEMPTION_ENABLED
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 26, 2026
Updated · August 1, 2026
Description
A flaw was found in the Linux kernel's drm/amd/display component. When the dcn32_enable_phantom_plane() function attempts to allocate memory using kvzalloc() within a floating-point unit (FPU) enabled region where software interrupts (softirqs) are disabled, it can trigger an error. This can lead to a kernel crash, resulting in a denial of service (DoS) for the system.
CVSS score applicability
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
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-663 · Use of a Non-reentrant Function in a Concurrent Context