CVE-2026-58093

7.0 Élevée

Publiée le 26/08/2026 à 08:16 · Modifiée le 24/09/2026 à 15:25 · Analysée par le NVD · Source : secteam@freebsd.org

Description

The TIOCSCTTY ioctl handler drops the tty lock in order to acquire the process tree lock. After reacquiring the tty lock, the handler did not revalidate the state of the terminal, and could proceed to link a terminal that was concurrently being destroyed to the calling process' session. An unprivileged local user can exploit this race condition to escalate privileges.

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Produits concernés

FreeBSD
Freebsd freebsd

Scores CVSS

Version	Score	Source	Vecteur
3.1	7.0 Élevée	134c704f-9b21-4f2e-91b3-4a467353bcc0	`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`

Faiblesses (CWE)

CWE-362
CWE-416

Références

https://security.freebsd.org/advisories/FreeBSD-SA-26:62.tty.asc Vendor Advisory

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories