{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63959","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T07:54:57.023Z","datePublished":"2026-07-19T14:55:49.553Z","dateUpdated":"2026-07-20T06:41:39.202Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-07-20T06:41:39.202Z"},"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":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/typec/tcpm/tcpci_maxim_core.c"],"versions":[{"version":"6f413b559f86a2894188e082e389ff95ee428345","lessThan":"0af00f1459f5dd757f0d392f8caa38039561ac62","status":"affected","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","lessThan":"dc17721d42e6d89f63572e63add8306a0e15eb3c","status":"affected","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","lessThan":"9b496e3371c04f0a03b7faa5d2442536d00e3998","status":"affected","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","lessThan":"c4ab8e2d4432abb646c5c0687f8dab173da901f9","status":"affected","versionType":"git"},{"version":"6f413b559f86a2894188e082e389ff95ee428345","lessThan":"aa2f716327be1818e1cb156da8a2844804aaec2f","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/typec/tcpm/tcpci_maxim_core.c"],"versions":[{"version":"5.10","status":"affected"},{"version":"0","lessThan":"5.10","status":"unaffected","versionType":"semver"},{"version":"6.6.143","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.93","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.35","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.12","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"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"}]}]}],"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"}}}}