CVEvulnerability
CVE-2026-5398
8.4 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-04-22
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 8.4 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416
Description
The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the controlling terminal to the calling process' session. If the invoking process then exits, the terminal structure may end up containing a pointer to freed memory.
A malicious process can abuse the dangling pointer to grant itself root privileges.
Affected configurations
• freebsd freebsd 13.5
• freebsd freebsd 14.3
• freebsd freebsd 14.4
• freebsd freebsd 15.0
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://security.freebsd.org/advisories/FreeBSD-SA-26:10.tty.asc Vendor Advisory