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OpenAdvisories
Medium · 5.5 CVE-2026-76061 EUVD-2026-93915

Cri-o: cri-o: bind_mount_prefix intermediate-symlink prefix bypass

Published Oct 6, 2026 · Updated Oct 9, 2026 · Assigned by redhat

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.

Affected products

VendorProductAffectedFixed
— cri-o < 1.34.14, 1.35.0 – < 1.35.9, 1.36.0 – < 1.36.6, 1.37.0 – < 1.37.1 1.34.14
Red Hat Red Hat OpenShift Container Platform 4 — —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 cri-o No fix yet —

References