CVEvulnerability

CVE-2025-31133

7.3 HIGH Published 2025-11-06 Modified 2026-10-07 Official page ↗
Status
Analyzed
Published
2025-11-06
Last modified
2026-10-07
Assigner
[email protected]
CVSS 4.0 ([email protected])
7.3 HIGH — CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-363, CWE-61

Description

runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7 and below, 1.3.0-rc.1 through 1.3.1, 1.4.0-rc.1 and 1.4.0-rc.2 files, runc would not perform sufficient verification that the source of the bind-mount (i.e., the container's /dev/null) was actually a real /dev/null inode when using the container's /dev/null to mask. This exposes two methods of attack: an arbitrary mount gadget, leading to host information disclosure, host denial of service, container escape, or a bypassing of maskedPaths. This issue is fixed in versions 1.2.8, 1.3.3 and 1.4.0-rc.3.

Affected configurations

• linuxfoundation runc (< 1.2.8) • linuxfoundation runc (>= 1.3.0 < 1.3.3) • linuxfoundation runc 1.4.0

Related

Weakness · CWE (2)

  • CWE-363 Race Condition Enabling Link Following weakness
  • CWE-61 UNIX Symbolic Link (Symlink) Following weakness

References