NULL pointer dereference in Linux kernel - CVE-2026-53144
Published: June 26, 2026
Vulnerability identifier: #VU135648
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53144
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in get_queue_ids() and its callers in the amdkfd debug trap queue handling path when processing a debug trap ioctl request with num_queues greater than zero and a missing queue array pointer. A local user can supply crafted ioctl parameters to trigger a kernel panic and cause a denial of service.
The issue is triggered via kfd_ioctl_set_debug_trap().
How to mitigate CVE-2026-53144
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/2bd550b547deabef98bd3b017ff743b7c34d3a6d
- https://git.kernel.org/stable/c/62bd09e23a23da70f9aae02748eba3e6bd93095d
- https://git.kernel.org/stable/c/72e259a32084c42816152c346096d2edd4213e23
- https://git.kernel.org/stable/c/daeceb0fe2a19651c58bbfa3d9d515ecb6ca8996
- https://git.kernel.org/stable/c/e1965e8913cfbf17622ca12638e7a07f68ba0848