CVE-2026-78410
High
Description
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Red Hat Enterprise Linux 10
PublishedSep 2, 2026
First seenSep 2, 2026
Weakness typeCWE-367CWE-367
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Red Hat Enterprise Linux 10 | No range specified | — |
| Red Hat Red Hat Hardened Images | No range specified | — |
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