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5.1 Moyenne

CVE-2026-47766 crun is an open source OCI Container Runtime fully written in C

Description

crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -> pts/ptmx` symlink. Version 1.28 fixes the issue.

Produits et versions touchés

Produit Versions touchées Corrigé en
crun 1.28 premières → < 1.28 1.28

Références

Chronologie

  1. Publiée
  2. Dernière modification
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