CVE-2026-76061
Cri-o: cri-o: bind_mount_prefix intermediate-symlink prefix bypass
- State
- Published
- Severity
- 5.5 Medium
- Published
- Oct 6, 2026
- Updated
- Oct 9, 2026
- Reserved
- Aug 18, 2026
Description
A flaw was found in CRI-O's `bind_mount_prefix` handling. When configured with a non-empty `bind_mount_prefix`, a malicious container or local attacker could use a Container Runtime Interface (CRI) hostPath containing an intermediate absolute symlink. This could cause the bind mount source to resolve outside the intended prefixed root, potentially leading to unauthorized access to files or privilege escalation on the host system.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.5 Medium | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L | redhat |
Weaknesses
- CWE-59 Improper Link Resolution Before File Access ('Link Following')
Affected Products
| Product | Versions |
|---|---|
cri-o |
|
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-76061vdb-entry
- RHBZ#2520330issue-tracking
- https://github.com/cri-o/cri-o/commit/01f90366dc8c8db0df32b4aae7fd067c1eddbb70
- https://github.com/cri-o/cri-o/commit/6d08a9a60ecfabdb3cbea0c8d698e31f1f01cb40
- https://github.com/cri-o/cri-o/commit/d6f58973acfcae93ecc039e0297fbe5f2548b46b
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