OR
          *cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:* versions up to (excluding) 1.3.6
          *cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:* versions from (including) 1.4.0 up to (excluding) 1.4.3
          *cpe:2.3:a:linuxfoundation:runc:1.5.0:rc1:*:*:*:*:*:*
          *cpe:2.3:a:linuxfoundation:runc:1.5.0:rc2:*:*:*:*:*:*

GitHub, Inc.: https://github.com/opencontainers/runc/commit/864db8042dbb Types: Patch

GitHub, Inc.: https://github.com/opencontainers/runc/security/advisories/GHSA-xjvp-4fhw-gc47 Types: Mitigation, Patch, Vendor Advisory

{"timestamp":"2026-07-01T13:34:05.348945Z","id":"CVE-2026-41579","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

runc is a CLI tool for spawning and running containers according to the OCI specification. In versions prior to 1.3.6, 1.4.0-rc.1, 1.4.0-rc.12, 1.5.0-rc.1, and 1.5.0-rc.1, when setting up the container rootfs, setupPtmx and setupDevSymlinks call os.Remove and os.Symlink with a filepath.Join string which allow an image with /dev as a symlink to trick runc into deleting files called ptmx on the host or creating a hardcoded set of symlinks with specific names and targets in an arbitrary pre-existing host directory. This issue is not exploitable under Docker, because Docker creates a top-level read-only layer that masks any malicious /dev symlink present in the container image — unlike some other Linux container tooling, whose higher-level runtimes built on runc remain exposed to exploitation via a malicious image. This issue has been fixed in versions 1.3.6, 1.4.3 and 1.5.0.

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CWE-61

https://github.com/opencontainers/runc/commit/864db8042dbb

https://github.com/opencontainers/runc/security/advisories/GHSA-xjvp-4fhw-gc47

[{"vendor":"opencontainers","product":"runc","versions":[{"version":"< 1.3.6","status":"affected"},{"version":">= 1.4.0-rc.1, < 1.4.3","status":"affected"},{"version":">= 1.5.0-rc.1, < 1.5.0-rc.3","status":"affected"}]}]