VDB
RHSA-2026%3A6492
RHSA-2026%3A6492
PUBLISHED
CVSS 8.199999809265137 HIGH
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-x86_64-412.86.202604010116-0 as a component of Red Hat OpenShift Container Platform 4.12 | rhcos-x86_64-412.86.202604010116-0, 412.86.202604010116-0 |
Timeline
- Apr 9, 2026 CVE Published
- May 1, 2026 Distribution Patch
- May 1, 2026 Distribution Patch
- May 1, 2026 Security Advisory
- May 1, 2026 Security Advisory
- May 1, 2026 Security Advisory
- May 1, 2026 Security Advisory
- May 14, 2026 CVE Updated
References
- https://access.redhat.com/errata/RHSA-2026:6492 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2404705 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2404708 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2414683 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_6492.json advisory
- https://access.redhat.com/security/cve/CVE-2025-31133 advisory
- https://www.cve.org/CVERecord?id=CVE-2025-31133 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-31133 advisory
- https://github.com/opencontainers/runc/security/advisories/GHSA-9493-h29p-rfm2 advisory
- https://access.redhat.com/security/cve/CVE-2025-52565 advisory
- https://www.cve.org/CVERecord?id=CVE-2025-52565 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-52565 advisory
- https://github.com/opencontainers/runc/security/advisories/GHSA-qw9x-cqr3-wc7r advisory
- https://access.redhat.com/security/cve/CVE-2025-61662 advisory
- https://www.cve.org/CVERecord?id=CVE-2025-61662 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-61662 advisory
- https://lists.gnu.org/archive/html/grub-devel/2025-11/msg00155.html advisory