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.

Based on the description, it is inferred that the attack vector would be local privileged or already‑elevated users, since the flaw lies in a privileged kernel module. The EPSS score is < 1% and the vulnerability is not listed in CISA KEV, indicating no known active exploitation. Exploitation would require the ability to load or modify kernel modules locally. The CVSS score of 5.5 indicates a medium severity, but the attack would likely result in service disruption rather than privilege escalation or data compromise.