{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98754","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.368Z","datePublished":"2026-10-18T15:47:40.255Z","dateUpdated":"2026-10-30T12:39:24.788Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-30T12:39:24.788Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: vcc: hold port lock when clearing tty pointer in vcc_cleanup\n\nvcc_cleanup() sets port->tty to NULL without holding port->lock, racing\nwith vcc_event() LDC callbacks that read port->tty under port->lock and\nthen use tty->port. This can cause a use-after-free when the callback\ndereferences tty->port after cleanup has already destroyed and freed it."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/vcc.c"],"versions":[{"version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","lessThan":"b0ad9d025c3229a628a82fbaa7578891075a950d","status":"affected","versionType":"git"},{"version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","lessThan":"b193617080b7036d143674089bcfb7d2ba3db588","status":"affected","versionType":"git"},{"version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","lessThan":"afcbb821c571f39b273127a7c7d26cb2cef27d2f","status":"affected","versionType":"git"},{"version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","lessThan":"57753441ef84bee3bf0e9ee1e3778d119c44aa32","status":"affected","versionType":"git"},{"version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","lessThan":"88f6ecb058801e9ce7b9aabc966530118d7cd53c","status":"affected","versionType":"git"},{"version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","lessThan":"821050631750e982007c0856c119346edba51cae","status":"affected","versionType":"git"},{"version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","lessThan":"1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4","status":"affected","versionType":"git"},{"version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","lessThan":"03b49c991abb8d021ca6fe51cd173447236b0552","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/tty/vcc.c"],"versions":[{"version":"4.14","status":"affected"},{"version":"0","lessThan":"4.14","status":"unaffected","versionType":"semver"},{"version":"5.10.273","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.224","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.191","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.56","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.10","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","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":"4.14","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/b0ad9d025c3229a628a82fbaa7578891075a950d"},{"url":"https://git.kernel.org/stable/c/b193617080b7036d143674089bcfb7d2ba3db588"},{"url":"https://git.kernel.org/stable/c/afcbb821c571f39b273127a7c7d26cb2cef27d2f"},{"url":"https://git.kernel.org/stable/c/57753441ef84bee3bf0e9ee1e3778d119c44aa32"},{"url":"https://git.kernel.org/stable/c/88f6ecb058801e9ce7b9aabc966530118d7cd53c"},{"url":"https://git.kernel.org/stable/c/821050631750e982007c0856c119346edba51cae"},{"url":"https://git.kernel.org/stable/c/1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4"},{"url":"https://git.kernel.org/stable/c/03b49c991abb8d021ca6fe51cd173447236b0552"}],"title":"tty: vcc: hold port lock when clearing tty pointer in vcc_cleanup","x_generator":{"engine":"bippy-1.2.0"}}}}