cxl/region: Validate partition index before array access

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-97423
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-24 17:17:20 UTC
Updated2026-09-24 17:17:20 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: cxl/region: Validate partition index before array access construct_region() reads cxled->part and uses it to index cxlds->part[] without checking for a negative value. If the partition was never resolved, part remains at its initial value of -1, causing an out-of-bounds array access. Add a guard to return -EBUSY when part is negative. The check was dropped during a merge.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 06322da06116f1ee52271dd4d84dc69580087df7 git Not specified
CNA Linux Linux affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 16329b510f76e5b824e05bf8add8b29850f1f16f git Not specified
CNA Linux Linux affected 6.18.53 semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/16329b510f76e5b824e05bf8add8b29850f1f16f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/06322da06116f1ee52271dd4d84dc69580087df7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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