usb: typec: tcpm: validate VDO count in Discover Identity ACK handlers

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-63963
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:15 UTC
Updated2026-07-20 07:16:41 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm: validate VDO count in Discover Identity ACK handlers Properly validate the count passed from a device when calling svdm_consume_identity() or svdm_consume_identity_sop_prime() as the device-controlled value could index off of the static arrays, which could leak data.

Risk And Classification

EPSS: 0.002000000 probability, percentile 0.100210000 (date 2026-07-20)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected f0690a25a140b853b1842fa80faf828601bb47e8 569f7971542eb10025d8a0989b83f28a29d8ba20 git Not specified
CNA Linux Linux affected f0690a25a140b853b1842fa80faf828601bb47e8 f9d787fbe83127105e42088cca40e5118db0d810 git Not specified
CNA Linux Linux affected f0690a25a140b853b1842fa80faf828601bb47e8 ed8649f3822e211d025bcab5158af6f8a38c8705 git Not specified
CNA Linux Linux affected f0690a25a140b853b1842fa80faf828601bb47e8 8fbc349e8383125dd2d8de1c1e926279d398ab17 git Not specified
CNA Linux Linux affected 4.12 Not specified
CNA Linux Linux unaffected 4.12 semver Not specified
CNA Linux Linux unaffected 6.12.93 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.35 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.12 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/569f7971542eb10025d8a0989b83f28a29d8ba20 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ed8649f3822e211d025bcab5158af6f8a38c8705 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8fbc349e8383125dd2d8de1c1e926279d398ab17 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f9d787fbe83127105e42088cca40e5118db0d810 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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