{"schema":"threatline.record/2","record":{"id":"CVE-2026-98748","aliases":[],"summary":"serial: 8250_bcm7271: fix use-after-free in brcmuart_remove()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250_bcm7271: fix use-after-free in brcmuart_remove()\n\nbrcmuart_handle_irq() starts priv->hrt to work around a receive-timeout\nquirk of the 8250 core when hardware flow control is enabled; the timer\ncallback brcmuart_hrtimer_func() dereferences priv.\n\nbrcmuart_remove() cancels the hrtimer before it unregisters the port, so\na receive-timeout interrupt that arrives in between re-arms the timer.\nAfter devm frees priv, the callback runs on freed memory.\n\nUnregister the port before cancelling the hrtimer.\nserial8250_unregister_port() shuts the port down and frees its IRQ, so\nbrcmuart_handle_irq() can no longer restart the timer, and the final\nhrtimer_cancel() drains any timer that was armed before or during the\nunregister.\n\nThis issue was found by an in-house static analysis tool.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98748","source_modified_at":"2026-10-21T12:56:23.396Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"41a469482de257ea8db43cf74b6311bd055de030","lessThan":"dd81650bec58ac70e5dfde2ec390acc1f0d1ed76","status":"affected","versionType":"git"},{"version":"41a469482de257ea8db43cf74b6311bd055de030","lessThan":"f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e","status":"affected","versionType":"git"},{"version":"41a469482de257ea8db43cf74b6311bd055de030","lessThan":"e32440fa536af96bdbc61d933a7c3a920b965edc","status":"affected","versionType":"git"},{"version":"41a469482de257ea8db43cf74b6311bd055de030","lessThan":"0794ba5332754866b2f1c0cca668775be3ffcf0a","status":"affected","versionType":"git"},{"version":"41a469482de257ea8db43cf74b6311bd055de030","lessThan":"189b9dc8c96ec9486482f27c1372b04a7152175e","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98748","source_modified_at":"2026-10-21T12:56:23.396Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.13","status":"affected"},{"version":"0","lessThan":"5.13","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"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98748","source_modified_at":"2026-10-21T12:56:23.396Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"0794ba5332754866b2f1c0cca668775be3ffcf0a","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98748","source_modified_at":"2026-10-21T12:56:23.396Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"189b9dc8c96ec9486482f27c1372b04a7152175e","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00168,"percentile":0.05729,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:47:33.446Z","modified_at":"2026-10-21T12:56:23.396Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98748","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:56:23.396Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98748","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/dd81650bec58ac70e5dfde2ec390acc1f0d1ed76"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e32440fa536af96bdbc61d933a7c3a920b965edc"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/0794ba5332754866b2f1c0cca668775be3ffcf0a"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/189b9dc8c96ec9486482f27c1372b04a7152175e"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-21T12:56:23.396Z","content_hash":"2bc5dcf0818a03c6403e14ca64ce2d53fe2d4bd495c71b2f624bfba83f312f18"}}