Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/xe: Don't transfer shrinker pages for pinned bos on purgeable state change Pinned bos have their pages removed from the shrinker's shrinkable / purgeable counts on pin, and added back on unpin according to the bo's purgeable state at that time. However, xe_bo_set_purgeable_shrinker() unconditionally transfers pages between the shrinkable and purgeable counts. If the purgeable state of a pinned bo changes, for example by userspace madvising DONTNEED on a VMA of a bo that is also pinned as a scanout buffer, this underflows one count and, after unpin, leaves the other one permanently inflated. Only update the purgeable flag for pinned bos, and leave the page accounting to unpin. (cherry picked from commit afe6bc012034123fd838328668e609bf57e46bd3)
References
- https://git.kernel.org/stable/c/135e998dd1e66b8854db7bd356b6563baf8b9d51
- https://git.kernel.org/stable/c/ffbfd3f98f4393e91dffce3a46ccb7cf5329cf2f
FAQ
What is CVE-2026-99145?
CVE-2026-99145 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: drm/xe: Don't transfer shrinker pages for pinned bos on purgeable state change Pinned bos have their pages removed from the shrink...
How severe is CVE-2026-99145?
CVSS scoring is not yet available for CVE-2026-99145. Check NVD for updates.
Is there a patch for CVE-2026-99145?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.