CVE-2025-52881
CVSS v3
7.5
HIGH
EPSS Score
0.6 %
exploit probability, as of 2026-10-19
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Get an alert for each new CVE published for opencontainers/runc.
Affected and fixed versions
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- github.com/opencontainers/runcGoall versions · fixed in 1.2.8
- github.com/opencontainers/selinuxGoall versions · fixed in 1.13.0
- aardvark-dnsAlmaLinux:8all versions · fixed in 2:1.10.1-2.module_el8.10.0+4023+db236c53
- buildahAlmaLinux:10all versions · fixed in 2:1.41.6-1.el10_1and 1 other package
- buildahAlmaLinux:9all versions · fixed in 2:1.41.6-1.el9_7and 1 other package
- buildahAlmaLinux:8all versions · fixed in 2:1.33.13-1.module_el8.10.0+4089+ce72bbbeand 1 other package
- cockpit-podmanAlmaLinux:8all versions · fixed in 84.1-1.module_el8.10.0+4016+efd18bf8
- conmonAlmaLinux:8all versions · fixed in 3:2.1.10-1.module_el8.10.0+4068+0e21408f
26 more package ranges on OSV.dev
Vendor advisories
runc: opencontainers/selinux: container escape and denial of service due to arbitrary write gadgets and procfs write redirects
rhai/assisted-installer-controller-rhel9 as a component of Assisted Installer for Red Hat OpenShift Container Platform 2 · openshift-logging/cluster-logging-rhel9-operator as a component of Logging Subsystem for Red Hat OpenShift · multicluster-engine/assisted-installer-controller-rhel9 as a component of Multicluster Engine for Kubernetes
Red Hat Security Advisory: multicluster engine for Kubernetes v2.9.8 security update
Red Hat Security Advisory: Red Hat AI Inference Server 3.2.2 (ROCm)
Red Hat Security Advisory: Red Hat AI Inference Server Model Optimization Tools 3.2.2 (CUDA)
Red Hat Security Advisory: Red Hat AI Inference Server 3.2.2 (CUDA)
Red Hat Security Advisory: Red Hat Migration Toolkit for Containers
58 more advisories
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.
Technical details
- Published
- 2025-11-06
Frequently asked questions
What is CVE-2025-52881?
Is CVE-2025-52881 actively exploited?
What is the CVSS score for CVE-2025-52881?
Running opencontainers/runc? Hear about its next vulnerability
CVE Watch matches each new CVE to the vendors and products you list (vendor and product, not the version) and puts it in your alerts with its KEV and EPSS status.
Already have an account? Open CVE WatchNo credit card required · No monthly cap on website lookups · 250 API requests/month
Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
- Running this software? CVE Watch alerts you to new vulnerabilities in your products.
Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.