Description
A flaw was found in nfs-utils. An unauthenticated remote attacker can trigger a Denial of Service (DoS) by sending repeated state notification requests to an exposed rpc.statd service. The service fails to properly release memory allocated during callback processing, leading to continuous memory growth. Sustained requests can exhaust system resources, eventually causing the service to degrade or crash.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 5 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | nfs-utils | 1:3.1.1-1 | — |
| Debian 13 | nfs-utils | No fix yet | — |
| Debian 12 | nfs-utils | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | nfs-utils | No fix yet | — |
| Ubuntu 26.04 LTS | nfs-utils | No fix yet | — |
| Ubuntu 24.04 LTS | nfs-utils | No fix yet | — |
| Ubuntu 22.04 LTS | nfs-utils | No fix yet | — |
| Ubuntu 20.04 LTS | nfs-utils | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | nfs-utils | No fix yet | — |
| Ubuntu 16.04 LTS | nfs-utils | No fix yet | — |
| Ubuntu 14.04 LTS | nfs-utils | No fix yet | — |
Advisories 1
- WID-SEC-2026-4020 nfs-utils: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Oct 18, 2026
References
- https://access.redhat.com/security/cve/CVE-2026-89096 vdb-entry
- RHBZ#2462372 issue-tracking