CVEvulnerability
CVE-2026-98751
- Status
- Received
- Published
- 2026-10-18
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
tty: abort break signalling on hangup
The break ioctls can race with hangup and end up calling into a tty
driver for a device that is already gone or powered down.
Drivers must handle this race, but TCSBRK and TCSBRKP should still be
aborted to avoid calling back into the driver after a user-controlled
timeout (possibly even after the tty has been reopened).
Note that drivers should disable any break state on shutdown so just
return on hangup (calling break_ctl() again is racy and will most likely
fail for drivers handling the race).
References
- https://git.kernel.org/stable/c/3bc82999fb85cecc7eb6ec1755ee7d698aa1e783 git.kernel.org
- https://git.kernel.org/stable/c/6c9c9367351a461d62e5c0a39bffdcfbb40f068b git.kernel.org
- https://git.kernel.org/stable/c/845a2737e0f5ffe5ca8d38de556012b0c9472cdd git.kernel.org
- https://git.kernel.org/stable/c/94af6cd832e9b4ce39a8fb59144a8f09ab56fd35 git.kernel.org
- https://git.kernel.org/stable/c/c8ccd3b2013daaf77b98f8a6724fcf4d2c5c52d6 git.kernel.org