Vulnerability feed

Executive summary

The advisory describes a flaw in the Linux kernel's Intel Xe graphics driver (drm/xe) where memory accounting for the shrinker can be subtracted or added twice when a buffer is pinned more than once. The advisory says this can cause the shrinker to run excessively under memory pressure. The advisory text provided is truncated, and it does not state a severity rating, a fixed version, or a vendor recommendation.

Technical summary

The weakness is an accounting error (double subtraction and underflow of signed counters interpreted as unsigned) in the xe driver's external buffer pin and unpin paths, and in handling of imported dma-bufs. Nested pins from multiple importers trigger repeated shrinker accounting calls, and the advisory says the fix guards these calls with pin-count transition checks and skips imported dma-bufs. The advisory does not state the attack vector, required privileges, or CVSS score. Affected and fixed kernel versions are not stated in the provided text. Workarounds and detection guidance are not stated. The advisory text is truncated, so later content may contain additional details.

Summaries are generated by AI from the linked advisory text. Confirm versions and fixes at the source.

Score

No CVSS score published.

Affects

LinuxLinuxLinux kernelLinux drm/xe