{"id":"CVE-2026-98753","published":"2026-10-18T16:17:29.103","lastModified":"2026-10-19T10:19:39.457","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: tty_port: restore TTY_IO_ERROR on activation failure\n\nMake sure to restore the TTY_IO_ERROR flag if activation fails to\nprevent I/O attempts on a port that is gone or powered down.\n\nThis specifically avoids issues like kernel panic due to unclocked\naccesses or NULL-pointer dereferences when accessing powered down or\nderegistered ports when a TTY ioctl races with hangup and open.\n\nNote that the flag is set again in tty_port_close() but not restoring it\non activation failure leaves a window where drivers fail to handle the\nioctl-hangup race.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/34d4f67472ef7a744970b772a8565ddc727788e2","tags":[]},{"url":"https://git.kernel.org/stable/c/56964f6a31238fb41d5830bb42520c5b10ff7d8f","tags":[]},{"url":"https://git.kernel.org/stable/c/6388409b711eb91b14fa075a4d861ccc4df1cfe7","tags":[]},{"url":"https://git.kernel.org/stable/c/7021acc84c2e0add77a1a33152e3a1e428fdbfdb","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}