{"id":"CVE-2026-63959","state":"PUBLISHED","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.","publishedAt":"2026-07-19T14:55:49.553Z","updatedAt":"2026-10-30T12:27:22.431Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6f413b559f86a2894188e082e389ff95ee428345","status":"affected","lessThan":"8a8cd4790b08c9f79ea2250b3bd933fd79f67e56","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","status":"affected","lessThan":"0af00f1459f5dd757f0d392f8caa38039561ac62","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","status":"affected","lessThan":"dc17721d42e6d89f63572e63add8306a0e15eb3c","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","status":"affected","lessThan":"9b496e3371c04f0a03b7faa5d2442536d00e3998","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","status":"affected","lessThan":"c4ab8e2d4432abb646c5c0687f8dab173da901f9","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","status":"affected","lessThan":"aa2f716327be1818e1cb156da8a2844804aaec2f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/typec/tcpm/tcpci_maxim_core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.143","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/tcpci_maxim_core.c"]}],"references":["https://git.kernel.org/stable/c/8a8cd4790b08c9f79ea2250b3bd933fd79f67e56","https://git.kernel.org/stable/c/0af00f1459f5dd757f0d392f8caa38039561ac62","https://git.kernel.org/stable/c/dc17721d42e6d89f63572e63add8306a0e15eb3c","https://git.kernel.org/stable/c/9b496e3371c04f0a03b7faa5d2442536d00e3998","https://git.kernel.org/stable/c/c4ab8e2d4432abb646c5c0687f8dab173da901f9","https://git.kernel.org/stable/c/aa2f716327be1818e1cb156da8a2844804aaec2f"],"weaknesses":[],"ingestedAt":"2026-10-30T12:46:06.359Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63959.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63959","state":"PUBLISHED","datePublished":"2026-07-19T14:55:49.553Z","dateUpdated":"2026-10-30T12:27:22.431Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.023Z"},"containers":{"cna":{"title":"usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6f413b559f86a2894188e082e389ff95ee428345","status":"affected","lessThan":"8a8cd4790b08c9f79ea2250b3bd933fd79f67e56","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","status":"affected","lessThan":"0af00f1459f5dd757f0d392f8caa38039561ac62","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","status":"affected","lessThan":"dc17721d42e6d89f63572e63add8306a0e15eb3c","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","status":"affected","lessThan":"9b496e3371c04f0a03b7faa5d2442536d00e3998","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","status":"affected","lessThan":"c4ab8e2d4432abb646c5c0687f8dab173da901f9","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","status":"affected","lessThan":"aa2f716327be1818e1cb156da8a2844804aaec2f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/typec/tcpm/tcpci_maxim_core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.143","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/tcpci_maxim_core.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8a8cd4790b08c9f79ea2250b3bd933fd79f67e56"},{"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:27:22.431Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.12.93"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.18.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.0.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}