{"api_version":"1","generated_at":"2026-10-26T08:56:12+00:00","cve":"CVE-2026-98754","urls":{"html":"https://cve.report/CVE-2026-98754","api":"https://cve.report/api/cve/CVE-2026-98754.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98754","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98754"},"summary":{"title":"tty: vcc: hold port lock when clearing tty pointer in vcc_cleanup","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 16:17:29","updated_at":"2026-10-26 07:17:11"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/03b49c991abb8d021ca6fe51cd173447236b0552","name":"https://git.kernel.org/stable/c/03b49c991abb8d021ca6fe51cd173447236b0552","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4","name":"https://git.kernel.org/stable/c/1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/88f6ecb058801e9ce7b9aabc966530118d7cd53c","name":"https://git.kernel.org/stable/c/88f6ecb058801e9ce7b9aabc966530118d7cd53c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/57753441ef84bee3bf0e9ee1e3778d119c44aa32","name":"https://git.kernel.org/stable/c/57753441ef84bee3bf0e9ee1e3778d119c44aa32","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/821050631750e982007c0856c119346edba51cae","name":"https://git.kernel.org/stable/c/821050631750e982007c0856c119346edba51cae","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98754","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98754","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb 57753441ef84bee3bf0e9ee1e3778d119c44aa32 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb 88f6ecb058801e9ce7b9aabc966530118d7cd53c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb 821050631750e982007c0856c119346edba51cae git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb 1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb 03b49c991abb8d021ca6fe51cd173447236b0552 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.160 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.113 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.56 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.10 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98754","cve":"CVE-2026-98754","epss":"0.001680000","percentile":"0.057430000","score_date":"2026-10-21","updated_at":"2026-10-22 00:15:10"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/tty/vcc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"57753441ef84bee3bf0e9ee1e3778d119c44aa32","status":"affected","version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","versionType":"git"},{"lessThan":"88f6ecb058801e9ce7b9aabc966530118d7cd53c","status":"affected","version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","versionType":"git"},{"lessThan":"821050631750e982007c0856c119346edba51cae","status":"affected","version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","versionType":"git"},{"lessThan":"1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4","status":"affected","version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","versionType":"git"},{"lessThan":"03b49c991abb8d021ca6fe51cd173447236b0552","status":"affected","version":"8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/tty/vcc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.14"},{"lessThan":"4.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.160","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.113","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.56","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.160","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.113","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.56","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.10","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"4.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-10-26T06:55:48.861Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98754","datePublished":"2026-10-18T15:47:40.255Z","dateReserved":"2026-09-25T10:25:14.368Z","dateUpdated":"2026-10-26T06:55:48.861Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 16:17:29","lastModifiedDate":"2026-10-26 07:17:11","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98754","Ordinal":"1","Title":"tty: vcc: hold port lock when clearing tty pointer in vcc_cleanu","CVE":"CVE-2026-98754","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98754","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"tty: vcc: hold port lock when clearing tty pointer in vcc_cleanu"}]}}}