Vulnerability · Published Sep 11, 2026 · Assigned by redhat
CVE-2026-89329Device-mapper-multipath: local denial of service via blocking ipc send operations
Medium 6.2
In plain English
A medium-severity security flaw 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 0.2% (higher than 6% of all known vulnerabilities).
Official description
A flaw was found in `multipathd`. A local attacker with access to the `multipathd` UNIX control socket can exploit this vulnerability by sending valid commands and then ceasing to read replies. This action can cause the `multipathd` listener thread to block, leading to a Denial of Service (DoS) where legitimate Inter-Process Communication (IPC) operations may hang or time out. This issue does not result in privilege escalation, arbitrary code execution, or impact data confidentiality or integrity.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | multipath-tools | no fix listed | DEBIAN-CVE-2026-89329 |
| Debian:13 | multipath-tools | no fix listed | DEBIAN-CVE-2026-89329 |
| Debian:14 | multipath-tools | no fix listed | DEBIAN-CVE-2026-89329 |
| Ubuntu:22.04:LTS | multipath-tools | no fix listed | UBUNTU-CVE-2026-89329 |
| Ubuntu:24.04:LTS | multipath-tools | no fix listed | UBUNTU-CVE-2026-89329 |
| Ubuntu:26.04:LTS | multipath-tools | no fix listed | UBUNTU-CVE-2026-89329 |
| Ubuntu:26.10 | multipath-tools | no fix listed | UBUNTU-CVE-2026-89329 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | 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 | see references |
| Red Hat | Red Hat OpenShift Container Platform 4 | see references |
Weakness: CWE-1322 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://access.redhat.com/security/cve/CVE-2026-89329 vdb-entry, x_refsource_REDHAT
- RHBZ#2470013 issue-tracking, x_refsource_REDHAT