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CVE-2025-52881 runc is a CLI tool for spawning and running containers according to the OCI specification

Description

runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7, 1.3.2 and 1.4.0-rc.2, an attacker can trick runc into misdirecting writes to /proc to other procfs files through the use of a racing container with shared mounts (we have also verified this attack is possible to exploit using a standard Dockerfile with docker buildx build as that also permits triggering parallel execution of containers with custom shared mounts configured). This redirect could be through symbolic links in a tmpfs or theoretically other methods such as regular bind-mounts. While similar, the mitigation applied for the related CVE, CVE-2019-19921, was fairly limited and effectively only caused runc to verify that when LSM labels are written they are actually procfs files. This issue is fixed in versions 1.2.8, 1.3.3, and 1.4.0-rc.3.

Produits et versions touchés

Produit Versions touchées Corrigé en
runc 1.4 premières → < 1.4.0-rc.3 1.4.0-rc.3
runc 1.3 premières → < 1.3.3 1.3.3
runc 1.2 premières → < 1.2.8 1.2.8

Références

Chronologie

  1. Publiée
  2. Dernière modification

Autres CVE de runc

Les 10 CVE de runc →
CVE-2026-41579 runc is a CLI tool for spawning and running containers according to the OCI specification 3.3 Faible CVE-2025-52565 runc is a CLI tool for spawning and running containers according to the OCI specification 8.4 Élevée CVE-2025-31133 runc is a CLI tool for spawning and running containers according to the OCI specification 7.3 Élevée CVE-2024-45310 runc is a CLI tool for spawning and running containers according to the OCI specification 3.6 Faible
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