7.5
High
CVE-2026-94640 Rpcbind: unbounded memory allocation in rpcbind statistics tracking allows unauthenticated remote denial of service
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.
CVSS 3.1 detail
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitable remotely over the network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat OpenShift Container Platform 4 | Versions not published | |
| Red Hat OpenShift Container Platform 4.22 4.22 | earliest → < 4.22.9.8.202610241758-0 | 4.22.9.8.202610241758-0 |
| Red Hat OpenShift Container Platform 5 | Versions not published |
References
- RHSA-2026:83561 access.redhat.com
- RHSA-2026:83562 access.redhat.com
- RHSA-2026:83563 access.redhat.com
- RHSA-2026:89197 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2462960 bugzilla.redhat.com
Timeline
- Published
- Last modified
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