Red HatCVE-2026-78410
Red Hat util-linux: race condition
High7.8CVE-2026-78410 · Published Sep 2, 2026 · updated Sep 4, 2026
A flaw was found in util-linux. Restricted bind mounts take the source path from fstab but do not pin that source before the privileged mount. A local unprivileged user who can replace the authorized source or a writable ancestor can redirect SUID mount(8) to bind another host directory. If the fstab entry also sets X-mount.owner, X-mount.group, or X-mount.mode, root then changes ownership or mode on that redirected inode.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 7 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 8 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 9 Product | all versions | No fix yet |
| all versions | No fix yet | |
| all versions | No fix yet | |
| Red Hat OpenShift Container Platform 4 Product | all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-367
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 2 | Red Hat Advanced Cluster Management for Kubernetes 2: remote code execution | Critical9.1 | No fix yet |
| Sep 2 | Red Hat rpm: command injection | High7.8 | No fix yet |
| Sep 2 | Red Hat Enterprise Linux 10: command injection | High7.8 | No fix yet |
| Sep 2 | The nsenter --join-cgroup option opens the target cgroup.procs file as root and... | High7.9 | No fix yet |
| Sep 2 | Red Hat Enterprise Linux 10: link following | High7.0 | No fix yet |
| Sep 2 | Red Hat Enterprise Linux: open redirect | Medium4.3 | No fix yet |