UpHeron
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Servers and applications

CVE-2024-21626

several container breakouts due to internally leaked fds

Severity
High 8.6
Published
31 Jan 2024
Last changed
17 Sept 2026
Added to UpHeron
1 Nov 2026
Fixed in
1.1.12
Also known as
GHSA-xr7r-f8xq-vfvv
Sources
NVD, Project advisories (GitHub)

Description

runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. In runc 1.1.11 and earlier, due to an internal file descriptor leak, an attacker could cause a newly-spawned container process (from runc exec) to have a working directory in the host filesystem namespace, allowing for a container escape by giving access to the host filesystem ("attack 2"). The…

Affected software

SoftwareAffected versions
runcServers and applications · cpe:a:linuxfoundation:runc
  • Every version before 1.1.12
runcServers and applications · github:opencontainers/runc
  • From 1.0.0-rc93 before 1.1.12

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2024-21626
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2024-21626
  • GitHub Advisory Database https://github.com/advisories/GHSA-xr7r-f8xq-vfvv
  • github.com https://github.com/opencontainers/runc/security/advisories/GHSA-xr7r-f8xq-vfvv