{"api_version":"1","generated_at":"2026-07-23T20:40:17+00:00","cve":"CVE-2026-63963","urls":{"html":"https://cve.report/CVE-2026-63963","api":"https://cve.report/api/cve/CVE-2026-63963.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-63963","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63963"},"summary":{"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:15","updated_at":"2026-07-20 07:16:41"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/569f7971542eb10025d8a0989b83f28a29d8ba20","name":"https://git.kernel.org/stable/c/569f7971542eb10025d8a0989b83f28a29d8ba20","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ed8649f3822e211d025bcab5158af6f8a38c8705","name":"https://git.kernel.org/stable/c/ed8649f3822e211d025bcab5158af6f8a38c8705","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8fbc349e8383125dd2d8de1c1e926279d398ab17","name":"https://git.kernel.org/stable/c/8fbc349e8383125dd2d8de1c1e926279d398ab17","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f9d787fbe83127105e42088cca40e5118db0d810","name":"https://git.kernel.org/stable/c/f9d787fbe83127105e42088cca40e5118db0d810","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63963","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63963","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f0690a25a140b853b1842fa80faf828601bb47e8 569f7971542eb10025d8a0989b83f28a29d8ba20 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f0690a25a140b853b1842fa80faf828601bb47e8 f9d787fbe83127105e42088cca40e5118db0d810 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f0690a25a140b853b1842fa80faf828601bb47e8 ed8649f3822e211d025bcab5158af6f8a38c8705 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f0690a25a140b853b1842fa80faf828601bb47e8 8fbc349e8383125dd2d8de1c1e926279d398ab17 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.93 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.35 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.12 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"63963","cve":"CVE-2026-63963","epss":"0.002000000","percentile":"0.100210000","score_date":"2026-07-20","updated_at":"2026-07-21 00:13:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/usb/typec/tcpm/tcpm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"569f7971542eb10025d8a0989b83f28a29d8ba20","status":"affected","version":"f0690a25a140b853b1842fa80faf828601bb47e8","versionType":"git"},{"lessThan":"f9d787fbe83127105e42088cca40e5118db0d810","status":"affected","version":"f0690a25a140b853b1842fa80faf828601bb47e8","versionType":"git"},{"lessThan":"ed8649f3822e211d025bcab5158af6f8a38c8705","status":"affected","version":"f0690a25a140b853b1842fa80faf828601bb47e8","versionType":"git"},{"lessThan":"8fbc349e8383125dd2d8de1c1e926279d398ab17","status":"affected","version":"f0690a25a140b853b1842fa80faf828601bb47e8","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/typec/tcpm/tcpm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.12"},{"lessThan":"4.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.35","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.93","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.35","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.12","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"4.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-07-20T06:41:43.925Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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"}],"title":"usb: typec: tcpm: validate VDO count in Discover Identity ACK handlers","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-63963","datePublished":"2026-07-19T14:55:52.388Z","dateReserved":"2026-07-19T07:54:57.024Z","dateUpdated":"2026-07-20T06:41:43.925Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:15","lastModifiedDate":"2026-07-20 07:16:41","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"63963","Ordinal":"1","Title":"usb: typec: tcpm: validate VDO count in Discover Identity ACK ha","CVE":"CVE-2026-63963","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"63963","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"usb: typec: tcpm: validate VDO count in Discover Identity ACK ha"}]}}}