CVE-2026-98980 namei: don't reveal overmounted entries in refwalk

In the Linux kernel, the following vulnerability has been resolved: namei: don't reveal overmounted entries in refwalk In rcuwalk the dentry is validated before it is accepted. stepinto stepinto rechecks dseq and followmountrcu rechecks mountlock. An entry that gets unlinked in between causes the...

CVE-2026-98980

The Linux kernel contains a vulnerability where refwalk can reveal overmounted entries in a very narrow window. While rcuwalk validates dentries before acceptance via step_into(), lookup_fast() in refwalk accepts hashed dentries without this recheck. If an entry is unlinked after a reference is t...

Linux Distros Unpatched Vulnerability : CVE-2026-98980

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - namei: don't reveal overmounted entries in refwalk In rcuwalk the dentry is validated before it is accepted. stepinto stepinto rechecks dseq and followmountrcu...