Race Condition Enabling Link Following Affecting github.com/opencontainers/runc/vendor/github.com/cyphar/filepath-securejoin/pathrs-lite/internal/assert 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-GITHUBCOMOPENCONTAINERSRUNCVENDORGITHUBCOMCYPHARFILEPATHSECUREJOINPATHRSLITEINTERNALASSERT-13843584
- published6 Nov 2025
- disclosed5 Nov 2025
- creditTõnis Tiigi, Aleksa Sarai, lfbzhm
Introduced: 5 Nov 2025
NewCVE-2025-52881 Â (opens in a new tab)How to fix?
Upgrade github.com/opencontainers/runc/vendor/github.com/cyphar/filepath-securejoin/pathrs-lite/internal/assert 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 in the handling of procfs file writes. An attacker can cause arbitrary writes to sensitive files or trigger a denial of service by redirecting write operations through race conditions and manipulating shared mounts or symbolic links. This can result in bypassing security mechanisms, escalating privileges, or crashing the host system by targeting files such as /proc/sysrq-trigger or altering kernel parameters.
Workaround
This vulnerability can be mitigated by:
Do not run untrusted container images from unknown or unverified sources.
Using rootless containers.