CVE-2026-53143

A flaw was found in the Linux kernel's AMD KFD (Kernel Fusion Driver) component. This buffer overflow vulnerability occurs due to incorrect memory buffer handling during CRIU (Checkpoint/Restore in User-space) operations on SDMA (System Direct Memory Access) queues. A local attacker can exploit this flaw during CRIU restore operations, which can lead to memory corruption in adjacent kernel memory, potentially impacting system stability or leading to further compromise. Additionally, during CRIU checkpoint operations, this vulnerability can result in information disclosure of adjacent kernel memory to userspace.

This vulnerability is rated as an Important severity because it enables a local attacker to cause kernel memory corruption or disclose privileged system data by invoking checkpoint and restore operations on AMD GPU compute queues. Exploitation is strictly limited to systems equipped with AMD GFX11 (Navi3x) graphics processors running workloads that utilize the AMD KFD driver subsystem. Standard enterprise deployments lacking this specific GPU generation or environments that do not perform checkpoint/restore routines on GPU-accelerated tasks are not exposed.

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.