drm/xe: Fix DPT allocation paths.

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-80915
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-09 17:17:46 UTC
Updated2026-09-09 17:17:46 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix DPT allocation paths. Remove the fallback for VRAM to system memory, I tested it and that doesn't work at all, only a black screen with pipe fault errors were observed. On systems with media GT, extra latency is added when accessing stolen memory when the GT is in MC6. Since we additionally aren't counting how much memory is used for stolen and we could in theory fill up the entire stolen area with DPT's, avoid using stolen and only use the default memory region. Using stolen may also result in random system hangs under load. (cherry picked from commit a196406a3831291598fe8e73245914f7acffdfe0)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 775d0adc01a55fe0458139330415d86bb3533efe 491c499295fb0b90308b230b0a1075dcdf7f4d12 git Not specified
CNA Linux Linux affected 775d0adc01a55fe0458139330415d86bb3533efe f03415030579163f791c978741af7f1f2f6510b7 git Not specified
CNA Linux Linux affected 775d0adc01a55fe0458139330415d86bb3533efe c457e2c845ccbf2224386029f3da4937ba424db0 git Not specified
CNA Linux Linux affected 775d0adc01a55fe0458139330415d86bb3533efe fc648757908304aedbad74f74bf58192aec383db git Not specified
CNA Linux Linux affected 4854ac2f88e2168ee4da2b152c6711772a8149aa git Not specified
CNA Linux Linux affected 6.11.3 6.12 semver Not specified
CNA Linux Linux affected 6.12 Not specified
CNA Linux Linux unaffected 6.12 semver Not specified
CNA Linux Linux unaffected 6.12.106 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.47 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.11 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/c457e2c845ccbf2224386029f3da4937ba424db0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f03415030579163f791c978741af7f1f2f6510b7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/491c499295fb0b90308b230b0a1075dcdf7f4d12 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fc648757908304aedbad74f74bf58192aec383db 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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