CVE-2020-25584

HIGH

FreeBSD < 11.4-RELEASE p9, 12.2-RELEASE p6, 13.0-RC5 p1 - Jail Escape via Race Condition

Title source: llm

Description

In FreeBSD 13.0-STABLE before n245118, 12.2-STABLE before r369552, 11.4-STABLE before r369560, 13.0-RC5 before p1, 12.2-RELEASE before p6, and 11.4-RELEASE before p9, a superuser inside a FreeBSD jail configured with the non-default allow.mount permission could cause a race condition between the lookup of ".." and remounting a filesystem, allowing access to filesystem hierarchy outside of the jail.

References (2)

Core 2

Core References

Vendor Advisory x_refsource_misc

https://security.FreeBSD.org/advisories/FreeBSD-SA-21:10.jail_mount.asc

Third Party Advisory x_refsource_confirm

https://security.netapp.com/advisory/ntap-20210423-0009/

Scores

CVSS v3 7.5

EPSS 0.0004

EPSS Percentile 11.4%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Details

CWE

CWE-362

Status published

Products (4)

freebsd/freebsd 11.4 (9 CPE variants)

freebsd/freebsd 12.2 (3 CPE variants)

freebsd/freebsd 13.0 beta1 (9 CPE variants)

freebsd/freebsd < 11.4

Published Apr 07, 2021

Tracked Since Feb 18, 2026