CVE-2026-98753
INFO
Priority: 0.00
BB Relevance:
0/100
Published: 2026-10-18
Modified: 2026-10-30
First seen: 2026-10-30
Status: pending_score
Description
In the Linux kernel, the following vulnerability has been resolved: tty: tty_port: restore TTY_IO_ERROR on activation failure Make sure to restore the TTY_IO_ERROR flag if activation fails to prevent I/O attempts on a port that is gone or powered down. This specifically avoids issues like kernel panic due to unclocked accesses or NULL-pointer dereferences when accessing powered down or deregistered ports when a TTY ioctl races with hangup and open. Note that the flag is set again in tty_port_close() but not restoring it on activation failure leaves a window where drivers fail to handle the ioctl-hangup race.
Affected Software (9)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 < 761e8c5eb13d1b5e196b0b39bdfed6fc67af9dd2 |
| Linux | Linux | a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 < 5469dc4153a60289c5bae00215947c6ce09fcc0e |
| Linux | Linux | a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 < e24625bff786fa3f22cc38b5038362b910621e83 |
| Linux | Linux | a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 < 16032c980d8f71642fcdc99309c571df3fcf3328 |
| Linux | Linux | a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 < 34d4f67472ef7a744970b772a8565ddc727788e2 |
| Linux | Linux | a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 < 7021acc84c2e0add77a1a33152e3a1e428fdbfdb |
| Linux | Linux | a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 < 6388409b711eb91b14fa075a4d861ccc4df1cfe7 |
| Linux | Linux | a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4 < 56964f6a31238fb41d5830bb42520c5b10ff7d8f |
| Linux | Linux | 2.6.33 |