CVE-2024-25941: jail(2) information leak

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-02-15 · updated 2026-06-17

Description

The jail(2) system call has not limited a visiblity of allocated TTYs (the kern.ttys sysctl). This gives rise to an information leak about processes outside the current jail. Attacker can get information about TTYs allocated on the host or in other jails. Effectively, the information printed by "pstat -t" may be leaked.

Affected products

FreeBSD: before 13.2; 13.2-p1, 13.2-p2, 13.2-p3, 13.2-p4, 13.2-p5, 13.2-p6 (+10) — fixed in 13.2

How to fix

Upgrade to a fixed version: FreeBSD 13.2. Check the vendor advisory for mitigations.

References

https://security.freebsd.org/advisories/FreeBSD-SA-24:02.tty.asc
https://security.netapp.com/advisory/ntap-20240510-0003/
https://security.freebsd.org/advisories/FreeBSD-SA-24:02.tty.asc
https://security.netapp.com/advisory/ntap-20240510-0003/

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