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 same attack could be used by a malicious image to allow a container process to gain access to the host filesystem through runc run ("attack 1"). Variants of attacks 1 and 2 could be also be used to overwrite semi-arbitrary host binaries, allowing for complete container escapes ("attack 3a" and "attack 3b"). runc 1.1.12 includes patches for this issue.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-3735-1 runc security update
Debian DSA Debian DSA DSA-5615-1 runc security update
EUVD EUVD EUVD-2024-0459 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 same attack could be used by a malicious image to allow a container process to gain access to the host filesystem through runc run ("attack 1"). Variants of attacks 1 and 2 could be also be used to overwrite semi-arbitrary host binaries, allowing for complete container escapes ("attack 3a" and "attack 3b"). runc 1.1.12 includes patches for this issue.
Github GHSA Github GHSA GHSA-xr7r-f8xq-vfvv runc vulnerable to container breakout through process.cwd trickery and leaked fds
Ubuntu USN Ubuntu USN USN-6619-1 runC vulnerability
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 16 Jul 2025 22:45:00 +0900

Type Values Removed Values Added
Metrics epss

{'score': 0.03057}

epss

{'score': 0.03846}


Mon, 14 Jul 2025 22:45:00 +0900

Type Values Removed Values Added
Metrics epss

{'score': 0.0331}

epss

{'score': 0.03057}


Fri, 16 May 2025 01:15:00 +0900

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 28 Feb 2025 00:00:00 +0900

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.15::el8

Fri, 14 Feb 2025 02:45:00 +0900

Type Values Removed Values Added
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 same attack could be used by a malicious image to allow a container process to gain access to the host filesystem through runc run ("attack 1"). Variants of attacks 1 and 2 could be also be used to overwrite semi-arbitrary host binaries, allowing for complete container escapes ("attack 3a" and "attack 3b"). runc 1.1.12 includes patches for this issue. 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 same attack could be used by a malicious image to allow a container process to gain access to the host filesystem through runc run ("attack 1"). Variants of attacks 1 and 2 could be also be used to overwrite semi-arbitrary host binaries, allowing for complete container escapes ("attack 3a" and "attack 3b"). runc 1.1.12 includes patches for this issue.

Fri, 13 Dec 2024 00:15:00 +0900

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.15::el9

Fri, 06 Dec 2024 00:15:00 +0900

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.14::el9

Wed, 04 Dec 2024 11:45:00 +0900

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.17::el9

Thu, 28 Nov 2024 00:15:00 +0900

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.16::el9

Fri, 22 Nov 2024 21:00:00 +0900


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-05-15T16:02:34.619Z

Reserved: 2023-12-29T03:00:44.953Z

Link: CVE-2024-21626

cve-icon Vulnrichment

Updated: 2024-08-19T07:48:05.378Z

cve-icon NVD

Status : Modified

Published: 2024-01-31T22:15:53.780

Modified: 2024-11-21T08:54:45.180

Link: CVE-2024-21626

cve-icon Redhat

Severity : Important

Publid Date: 2024-01-31T20:01:00Z

Links: CVE-2024-21626 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses