{"id":"CVE-2026-98748","published":"2026-10-18T16:17:28.557","lastModified":"2026-10-19T10:19:38.970","description":"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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/0794ba5332754866b2f1c0cca668775be3ffcf0a","tags":[]},{"url":"https://git.kernel.org/stable/c/189b9dc8c96ec9486482f27c1372b04a7152175e","tags":[]},{"url":"https://git.kernel.org/stable/c/e32440fa536af96bdbc61d933a7c3a920b965edc","tags":[]},{"url":"https://git.kernel.org/stable/c/f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}