vulnerability
Amazon Linux 2023: CVE-2025-31133: Important priority package update for runc
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:M/Au:S/C:C/I:C/A:C) | Nov 5, 2025 | Nov 7, 2025 | Dec 4, 2025 |
Severity
7
CVSS
(AV:L/AC:M/Au:S/C:C/I:C/A:C)
Published
Nov 5, 2025
Added
Nov 7, 2025
Modified
Dec 4, 2025
Description
A flaw was found in runc. This flaw exploits an issue with how masked paths are implementedin runc. When masking files, runc will bind-mount the container's /dev/null inode on top of the file. However, if an attacker can replace /dev/null with a symlink to some other procfs file, runc will instead bind-mount the symlink target read-write.
Solutions
amazon-linux-2023-upgrade-runcamazon-linux-2023-upgrade-runc-debuginfoamazon-linux-2023-upgrade-runc-debugsource
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