{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98748","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.367Z","datePublished":"2026-10-18T15:47:33.446Z","dateUpdated":"2026-10-30T12:39:18.369Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-30T12:39:18.369Z"},"descriptions":[{"lang":"en","value":"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/8250/8250_bcm7271.c"],"versions":[{"version":"41a469482de257ea8db43cf74b6311bd055de030","lessThan":"134d239558f2ac2602fad2392ec3e6d8d76af7d8","status":"affected","versionType":"git"},{"version":"41a469482de257ea8db43cf74b6311bd055de030","lessThan":"dad9fb86829ee96bbc6315d7209ceb24820ef889","status":"affected","versionType":"git"},{"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"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/8250/8250_bcm7271.c"],"versions":[{"version":"5.13","status":"affected"},{"version":"0","lessThan":"5.13","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":"5.13","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/134d239558f2ac2602fad2392ec3e6d8d76af7d8"},{"url":"https://git.kernel.org/stable/c/dad9fb86829ee96bbc6315d7209ceb24820ef889"},{"url":"https://git.kernel.org/stable/c/dd81650bec58ac70e5dfde2ec390acc1f0d1ed76"},{"url":"https://git.kernel.org/stable/c/f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e"},{"url":"https://git.kernel.org/stable/c/e32440fa536af96bdbc61d933a7c3a920b965edc"},{"url":"https://git.kernel.org/stable/c/0794ba5332754866b2f1c0cca668775be3ffcf0a"},{"url":"https://git.kernel.org/stable/c/189b9dc8c96ec9486482f27c1372b04a7152175e"}],"title":"serial: 8250_bcm7271: fix use-after-free in brcmuart_remove()","x_generator":{"engine":"bippy-1.2.0"}}}}