{"api_version":"1","generated_at":"2026-07-24T01:19:36+00:00","cve":"CVE-2026-63959","urls":{"html":"https://cve.report/CVE-2026-63959","api":"https://cve.report/api/cve/CVE-2026-63959.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-63959","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63959"},"summary":{"title":"usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT\n\nA broken/malicious port can transmit a CRC-valid frame whose header\nadvertises up to seven data objects but whose body carries fewer than\nthat.  Check for this, and rightfully reject the message, instead of\nreading from uninitialized stack memory.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:14","updated_at":"2026-07-20 07:16:41"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/c4ab8e2d4432abb646c5c0687f8dab173da901f9","name":"https://git.kernel.org/stable/c/c4ab8e2d4432abb646c5c0687f8dab173da901f9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/aa2f716327be1818e1cb156da8a2844804aaec2f","name":"https://git.kernel.org/stable/c/aa2f716327be1818e1cb156da8a2844804aaec2f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dc17721d42e6d89f63572e63add8306a0e15eb3c","name":"https://git.kernel.org/stable/c/dc17721d42e6d89f63572e63add8306a0e15eb3c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9b496e3371c04f0a03b7faa5d2442536d00e3998","name":"https://git.kernel.org/stable/c/9b496e3371c04f0a03b7faa5d2442536d00e3998","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0af00f1459f5dd757f0d392f8caa38039561ac62","name":"https://git.kernel.org/stable/c/0af00f1459f5dd757f0d392f8caa38039561ac62","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63959","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63959","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f413b559f86a2894188e082e389ff95ee428345 0af00f1459f5dd757f0d392f8caa38039561ac62 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f413b559f86a2894188e082e389ff95ee428345 dc17721d42e6d89f63572e63add8306a0e15eb3c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f413b559f86a2894188e082e389ff95ee428345 9b496e3371c04f0a03b7faa5d2442536d00e3998 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f413b559f86a2894188e082e389ff95ee428345 c4ab8e2d4432abb646c5c0687f8dab173da901f9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6f413b559f86a2894188e082e389ff95ee428345 aa2f716327be1818e1cb156da8a2844804aaec2f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.143 6.6.* 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":"63959","cve":"CVE-2026-63959","epss":"0.002000000","percentile":"0.100200000","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/tcpci_maxim_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0af00f1459f5dd757f0d392f8caa38039561ac62","status":"affected","version":"6f413b559f86a2894188e082e389ff95ee428345","versionType":"git"},{"lessThan":"dc17721d42e6d89f63572e63add8306a0e15eb3c","status":"affected","version":"6f413b559f86a2894188e082e389ff95ee428345","versionType":"git"},{"lessThan":"9b496e3371c04f0a03b7faa5d2442536d00e3998","status":"affected","version":"6f413b559f86a2894188e082e389ff95ee428345","versionType":"git"},{"lessThan":"c4ab8e2d4432abb646c5c0687f8dab173da901f9","status":"affected","version":"6f413b559f86a2894188e082e389ff95ee428345","versionType":"git"},{"lessThan":"aa2f716327be1818e1cb156da8a2844804aaec2f","status":"affected","version":"6f413b559f86a2894188e082e389ff95ee428345","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/typec/tcpm/tcpci_maxim_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.10"},{"lessThan":"5.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","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":"6.6.143","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.93","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.35","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.12","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"5.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT\n\nA broken/malicious port can transmit a CRC-valid frame whose header\nadvertises up to seven data objects but whose body carries fewer than\nthat.  Check for this, and rightfully reject the message, instead of\nreading from uninitialized stack memory."}],"providerMetadata":{"dateUpdated":"2026-07-20T06:41:39.202Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/0af00f1459f5dd757f0d392f8caa38039561ac62"},{"url":"https://git.kernel.org/stable/c/dc17721d42e6d89f63572e63add8306a0e15eb3c"},{"url":"https://git.kernel.org/stable/c/9b496e3371c04f0a03b7faa5d2442536d00e3998"},{"url":"https://git.kernel.org/stable/c/c4ab8e2d4432abb646c5c0687f8dab173da901f9"},{"url":"https://git.kernel.org/stable/c/aa2f716327be1818e1cb156da8a2844804aaec2f"}],"title":"usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-63959","datePublished":"2026-07-19T14:55:49.553Z","dateReserved":"2026-07-19T07:54:57.023Z","dateUpdated":"2026-07-20T06:41:39.202Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:14","lastModifiedDate":"2026-07-20 07:16:41","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"63959","Ordinal":"1","Title":"usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYT","CVE":"CVE-2026-63959","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"63959","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT\n\nA broken/malicious port can transmit a CRC-valid frame whose header\nadvertises up to seven data objects but whose body carries fewer than\nthat.  Check for this, and rightfully reject the message, instead of\nreading from uninitialized stack memory.","Type":"Description","Title":"usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYT"}]}}}