Race Condition Enabling Link Following Affecting github.com/opencontainers/runc/libcontainer/system package, versions <1.2.8>=1.3.0-rc.1 <1.3.3>=1.4.0-rc.1 <1.4.0-rc.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMOPENCONTAINERSRUNCLIBCONTAINERSYSTEM-13843132
- published6 Nov 2025
- disclosed5 Nov 2025
- creditLei Wang, lfbzhm, Aleksa Sarai
Introduced: 5 Nov 2025
NewCVE-2025-52565 Â (opens in a new tab)How to fix?
Upgrade github.com/opencontainers/runc/libcontainer/system to version 1.2.8, 1.3.3, 1.4.0-rc.3 or higher.
Overview
Affected versions of this package are vulnerable to Race Condition Enabling Link Following due to insufficient checks when bind-mounting /dev/pts/$n to /dev/console inside the container. An attacker can gain unauthorized write access to sensitive files within the container environment by manipulating the timing of mount operations and providing a malicious configuration, potentially leading to denial of service or container escape.
Note:
This is only exploitable if the attacker can supply a crafted container configuration and execute processes with sufficient privileges inside the container.
Workaround
This vulnerability can be mitigated by:
Using containers with user namespaces enabled.
Configuring containers to not permit processes to run with root privileges.
Applying SELinux policies that restrict access to
/dev/console.