In the Linux kernel’s DRM Xe driver, the function pxp_start fails to clear a restart flag after returning from a conditional jump. Consequently the function repeatedly jumps back to its beginning once it reaches the end, creating an infinite loop that can tie the GPU channel and stall GPU‑related operations. This loop does not directly allow code execution but can lead to a denial‑of‑service condition by preventing the driver from returning control to userspace or other kernel components.

The flaw affects the Linux kernel wherever the drm/xe/pxp component is compiled and loaded. All builds that include the Xe DRM driver are potentially impacted; no specific kernel version is listed, so any deployment that has not applied the fix may be vulnerable.

The EPSS score is not available and the vulnerability is not listed in CISA KEV, indicating no known active exploitation. Because the bug resides in a privileged kernel module, exploitation would require local ability to load or modify kernel modules, or an attacker with already elevated privileges. No CVSS score is provided, so the severity cannot be quantified, but the attack would likely result in service disruption rather than privilege escalation or data compromise.