vulnerability

Arch Linux: Arbitrary filesystem access (CVE-2025-6020)

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Jun 17, 2025
Added
Jul 11, 2025
Modified
Jan 28, 2026

Description

The module pam_namespace in linux-pam <= 1.7.0 may access user-controlled paths without proper protections, which allows a local user to elevate their privileges to root via multiple symlink attacks and race conditions.

Systems are vulnerable if they use pam_namespace to polyinstantiate a directory for which the path to the polyinstantiated directory is under user-control or the path to the instance directory is under user-control.

Solution

arch-linux-upgrade-latest

References

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