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CVE-2026-99145drm/xe: Don't transfer shrinker pages for pinned bos on purgeable state change

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)

Timeline

  1. ID reserved

    By Linux

  2. · 33 days later

    Published

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.

EPSS (exploitation in 30 days)
0.16% · top 94% of all CVEs (12 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.

Affected products

  • Linux · Linux

    • affected 536a2ead3a8f2048643da3e8340a4d73fdf71903 – < 135e998dd1e66b8854db7bd356b6563baf8b9d51
    • affected 536a2ead3a8f2048643da3e8340a4d73fdf71903 – < ffbfd3f98f4393e91dffce3a46ccb7cf5329cf2f

  • Linux · Linux

    • affected 7.1
    • unaffected < 7.1
    • unaffected 7.2.13 – ≤ 7.2.*
    • unaffected 7.3 – ≤ *

References

References2

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .