Vulnerability · Published Sep 22, 2026 · Assigned by redhat
CVE-2026-94640Rpcbind: unbounded memory allocation in rpcbind statistics tracking allows unauthenticated remote denial of service
High 7.5
In plain English
A high-severity uncontrolled resource consumption in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
A flaw was found in rpcbind. This vulnerability allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by sending a large number of unique requests. The rpcbind service records previously unseen RPC (Remote Procedure Call) statistics in unbounded in-memory lists, leading to persistent memory growth and increased CPU usage. This can degrade or exhaust service availability.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | rpcbind | 1.2.7-3.el10_2.1 | ALSA-2026:83561 |
| AlmaLinux:8 | rpcbind | 1.2.5-11.el8_10 | ALSA-2026:83563 |
| AlmaLinux:9 | rpcbind | 1.2.6-7.el9_8.1 | ALSA-2026:83562 |
| Debian:12 | rpcbind | no fix listed | DEBIAN-CVE-2026-94640 |
| Debian:13 | rpcbind | no fix listed | DEBIAN-CVE-2026-94640 |
| Debian:14 | rpcbind | no fix listed | DEBIAN-CVE-2026-94640 |
| Rocky Linux:10 | rpcbind | 0:1.2.7-3.el10_2.1 | RLSA-2026:83561 |
| Rocky Linux:8 | rpcbind | 0:1.2.5-11.el8_10 | RLSA-2026:83563 |
| Rocky Linux:9 | rpcbind | 0:1.2.6-7.el9_8.1 | RLSA-2026:83562 |
| Ubuntu:22.04:LTS | rpcbind | no fix listed | UBUNTU-CVE-2026-94640 |
| Ubuntu:24.04:LTS | rpcbind | no fix listed | UBUNTU-CVE-2026-94640 |
| Ubuntu:26.04:LTS | rpcbind | no fix listed | UBUNTU-CVE-2026-94640 |
| Ubuntu:26.10 | rpcbind | no fix listed | UBUNTU-CVE-2026-94640 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat OpenShift Container Platform 4.22 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat OpenShift Container Platform 4 | see references |
| Red Hat | Red Hat OpenShift Container Platform 5 | see references |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- RHSA-2026:83561 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:83562 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:83563 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:89197 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-94640 vdb-entry, x_refsource_REDHAT
- RHBZ#2462960 issue-tracking, x_refsource_REDHAT