VDB
RHSA-2025:21824
RHSA-2025:21824
PUBLISHED
CVSS 8.199999809265137 HIGH
Record from redhat · Published November 27, 2025
A flaw was found in runc. This flaw exploits an issue with how masked paths are implementedin runc. When masking files, runc will bind-mount the container's /dev/null inode on top of the file. However, if an attacker can replace /dev/null with a symlink to some other procfs file, runc will instead bind-mount the symlink target read-write.
Risk scores
CVSS 3.1
8.199999809265137
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | rhcos-aarch64-416.94.202511191934-0 as a component of Red Hat OpenShift Container Platform 4.16 | rhcos-aarch64-416.94.202511191934-0, 416.94.202511191934-0 |
| Red Hat | rhcos-x86_64-416.94.202511191934-0 as a component of Red Hat OpenShift Container Platform 4.16 | rhcos-x86_64-416.94.202511191934-0, 416.94.202511191934-0 |
| Red Hat | rhcos-ppc64le-416.94.202511191934-0 as a component of Red Hat OpenShift Container Platform 4.16 | 416.94.202511191934-0, rhcos-ppc64le-416.94.202511191934-0 |
| Red Hat | rhcos-s390x-416.94.202511191934-0 as a component of Red Hat OpenShift Container Platform 4.16 | rhcos-s390x-416.94.202511191934-0, 416.94.202511191934-0 |
| Red Hat | rhcos-s390x-416.94.202511191934-0 as a component of Red Hat OpenShift Container Platform 4.16 | rhcos-s390x-416.94.202511191934-0, 416.94.202511191934-0 |
| Red Hat | rhcos-ppc64le-416.94.202511191934-0 as a component of Red Hat OpenShift Container Platform 4.16 | 416.94.202511191934-0, rhcos-ppc64le-416.94.202511191934-0 |
| Red Hat | rhcos-aarch64-416.94.202511191934-0 as a component of Red Hat OpenShift Container Platform 4.16 | 416.94.202511191934-0, rhcos-aarch64-416.94.202511191934-0 |
| Red Hat | rhcos-x86_64-416.94.202511191934-0 as a component of Red Hat OpenShift Container Platform 4.16 | 416.94.202511191934-0, rhcos-x86_64-416.94.202511191934-0 |
Timeline
- Nov 27, 2025 CVE Published
- Apr 26, 2026 Security Advisory (4 in total, the first dated here)
- Apr 29, 2026 Distribution Patch (2 in total, the first dated here)
- Jul 30, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln RHSA-2025:21824
vulnetix vdb fixes RHSA-2025:21824Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/RHSA-2025%3A21824/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_21824.json advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2404708 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2404715 issue
- https://nvd.nist.gov/vuln/detail/CVE-2025-52881 advisory
- https://www.cve.org/CVERecord?id=CVE-2025-31133 advisory
- https://github.com/opencontainers/selinux/pull/237 advisory
- https://github.com/opencontainers/runc/security/advisories/GHSA-cgrx-mc8f-2prm advisory
- https://access.redhat.com/errata/RHSA-2025:21824 advisory
- https://github.com/opencontainers/runc/security/advisories/GHSA-qw9x-cqr3-wc7r advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://github.com/opencontainers/runc/security/advisories/GHSA-9493-h29p-rfm2 advisory
- https://access.redhat.com/security/cve/CVE-2025-52881 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-52565 advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2404705 issue
- https://nvd.nist.gov/vuln/detail/CVE-2025-31133 advisory
- https://access.redhat.com/security/cve/CVE-2025-52565 advisory
- https://access.redhat.com/security/cve/CVE-2025-31133 advisory
- https://www.cve.org/CVERecord?id=CVE-2025-52565 advisory
- https://www.cve.org/CVERecord?id=CVE-2025-52881 advisory