Vulnerability in Red Hat Enterprise Linux 10

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

A flaw was found in nfs-utils. The fsidd daemon improperly handles input received over its local domain socket by relying on program assertions to verify command arguments. A local user can exploit this vulnerability by sending a malformed request lacking the required arguments to trigger an assertion failure. This causes the daemon to crash, resulting in a Denial of Service (DoS) for filesystem identifier lookup services until restarted.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund18 Oct 2026WID-SEC-2026-4020

  nfs-utils: Multiple vulnerabilities allow denial of service Translated from German

  CVE-2026-89096CVE-2026-89098

[ References ]References

• access.redhat.com/security/cve/CVE-2026-89098
• bugzilla.redhat.com/show_bug.cgi