tty: fix saved termios reset race (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.18 % · percentile 7 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
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.
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
European references
- ENISA EUVD · EUVD-2026-103835
- GCVE · GCVE-0-2026-98750
CERT-FR advisories
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 93857edd9829e144acb6c7e72d593f6e01aead66 < 15ddaf908a8eee14e1872ff9c4cdb73562634e7e ; affected 93857edd9829e144acb6c7e72d593f6e01aead66 < bcb9b5df70d439f3c9d5a2d7f359dd7ab117bee0 ; affected 93857edd9829e144acb6c7e72d593f6e01aead66 < 33048616c4e22930e8769b8d14ee8a0dc5a80ceb ; affected 93857edd9829e144acb6c7e72d593f6e01aead66 < 6b4e15cccfbe03b7c6ae60ff570c401bfb1e51d6 ; affected 93857edd9829e144acb6c7e72d593f6e01aead66 < 1572d86bcf0bcb848d20fc5e5de7ed6963034c2b ; affected 93857edd9829e144acb6c7e72d593f6e01aead66 < 08bf919f041af9de372428bb0c938157ea144164 |
| Linux · Linux | affected 4.12 ; unaffected 0 < 4.12 ; unaffected 5.10.273 ≤ 5.10.* ; unaffected 5.15.224 ≤ 5.15.* ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |