{"id":"CVE-2026-63963","state":"PUBLISHED","title":"usb: typec: tcpm: validate VDO count in Discover Identity ACK handlers","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpm: validate VDO count in Discover Identity ACK handlers\n\nProperly validate the count passed from a device when calling\nsvdm_consume_identity() or svdm_consume_identity_sop_prime() as the\ndevice-controlled value could index off of the static arrays, which\ncould leak data.","publishedAt":"2026-07-19T14:55:52.388Z","updatedAt":"2026-10-30T12:27:24.562Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f0690a25a140b853b1842fa80faf828601bb47e8","status":"affected","lessThan":"150c30131c032b4b1ad9acd29f2834321d85ae4b","versionType":"git"},{"version":"f0690a25a140b853b1842fa80faf828601bb47e8","status":"affected","lessThan":"6bacd22e1eae77abf089bbdc016270200a8dc83b","versionType":"git"},{"version":"f0690a25a140b853b1842fa80faf828601bb47e8","status":"affected","lessThan":"569f7971542eb10025d8a0989b83f28a29d8ba20","versionType":"git"},{"version":"f0690a25a140b853b1842fa80faf828601bb47e8","status":"affected","lessThan":"f9d787fbe83127105e42088cca40e5118db0d810","versionType":"git"},{"version":"f0690a25a140b853b1842fa80faf828601bb47e8","status":"affected","lessThan":"ed8649f3822e211d025bcab5158af6f8a38c8705","versionType":"git"},{"version":"f0690a25a140b853b1842fa80faf828601bb47e8","status":"affected","lessThan":"8fbc349e8383125dd2d8de1c1e926279d398ab17","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/typec/tcpm/tcpm.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.12","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.93","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.35","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.12","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/typec/tcpm/tcpm.c"]}],"references":["https://git.kernel.org/stable/c/150c30131c032b4b1ad9acd29f2834321d85ae4b","https://git.kernel.org/stable/c/6bacd22e1eae77abf089bbdc016270200a8dc83b","https://git.kernel.org/stable/c/569f7971542eb10025d8a0989b83f28a29d8ba20","https://git.kernel.org/stable/c/f9d787fbe83127105e42088cca40e5118db0d810","https://git.kernel.org/stable/c/ed8649f3822e211d025bcab5158af6f8a38c8705","https://git.kernel.org/stable/c/8fbc349e8383125dd2d8de1c1e926279d398ab17"],"weaknesses":[],"ingestedAt":"2026-10-30T12:46:06.359Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63963.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63963","state":"PUBLISHED","datePublished":"2026-07-19T14:55:52.388Z","dateUpdated":"2026-10-30T12:27:24.562Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.024Z"},"containers":{"cna":{"title":"usb: typec: tcpm: validate VDO count in Discover Identity ACK handlers","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpm: validate VDO count in Discover Identity ACK handlers\n\nProperly validate the count passed from a device when calling\nsvdm_consume_identity() or svdm_consume_identity_sop_prime() as the\ndevice-controlled value could index off of the static arrays, which\ncould leak data."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f0690a25a140b853b1842fa80faf828601bb47e8","status":"affected","lessThan":"150c30131c032b4b1ad9acd29f2834321d85ae4b","versionType":"git"},{"version":"f0690a25a140b853b1842fa80faf828601bb47e8","status":"affected","lessThan":"6bacd22e1eae77abf089bbdc016270200a8dc83b","versionType":"git"},{"version":"f0690a25a140b853b1842fa80faf828601bb47e8","status":"affected","lessThan":"569f7971542eb10025d8a0989b83f28a29d8ba20","versionType":"git"},{"version":"f0690a25a140b853b1842fa80faf828601bb47e8","status":"affected","lessThan":"f9d787fbe83127105e42088cca40e5118db0d810","versionType":"git"},{"version":"f0690a25a140b853b1842fa80faf828601bb47e8","status":"affected","lessThan":"ed8649f3822e211d025bcab5158af6f8a38c8705","versionType":"git"},{"version":"f0690a25a140b853b1842fa80faf828601bb47e8","status":"affected","lessThan":"8fbc349e8383125dd2d8de1c1e926279d398ab17","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/typec/tcpm/tcpm.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.12","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.93","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.35","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.12","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/typec/tcpm/tcpm.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/150c30131c032b4b1ad9acd29f2834321d85ae4b"},{"url":"https://git.kernel.org/stable/c/6bacd22e1eae77abf089bbdc016270200a8dc83b"},{"url":"https://git.kernel.org/stable/c/569f7971542eb10025d8a0989b83f28a29d8ba20"},{"url":"https://git.kernel.org/stable/c/f9d787fbe83127105e42088cca40e5118db0d810"},{"url":"https://git.kernel.org/stable/c/ed8649f3822e211d025bcab5158af6f8a38c8705"},{"url":"https://git.kernel.org/stable/c/8fbc349e8383125dd2d8de1c1e926279d398ab17"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:27:24.562Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.12.93"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.18.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"7.0.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}