A vulnerability was recently discovered in the rpc.mountd daemon in the nfs-utils package for Linux, that allows a NFSv3 client to escalate the privileges assigned to it in the /etc/exports file at mount time. In particular, it allows the client to access any subdirectory or subtree of an exported directory, regardless of the set file permissions, and regardless of any 'root_squash' or 'all_squash' attributes that would normally be expected to apply to that client.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 6.5 · redhat, linux-nfsNVD modified 2026-10-16 12:16
Affected (CPE criteria) 7
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*cpe:2.3:a:linux-nfs:nfs-utils:-:*:*:*:*:*:*:*
References 12
- https://access.redhat.com/errata/RHSA-2026:3938 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:3939 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:3940 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:3941 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:3942 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:5127
- https://access.redhat.com/errata/RHSA-2026:5606
- https://access.redhat.com/errata/RHSA-2026:5867
- https://access.redhat.com/errata/RHSA-2026:5873
- https://access.redhat.com/errata/RHSA-2026:5877
- https://access.redhat.com/security/cve/CVE-2025-12801 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2413081 Issue Tracking, Third Party Advisory