Medium · CVSS 6.2CVE-2026-89329

Device-mapper-multipath: local denial of service via blocking ipc send operationsCVE-2026-89329

Answer in brief

CVE-2026-89329 records a Medium severity (CVSS 6.2) vulnerability in Device-mapper-multipath: local denial of service via blocking ipc send operations. The current sources do not mark it as known exploited. The current feed maps Red Hat/device-mapper-multipath (generic), Red Hat/openshift/ose-rhel-coreos-8 (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Sep 16, 2026Source checked Oct 26, 2026First seen by HOL Sep 11, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.2
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

CVSS is 6.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/device-mapper-multipath (generic), Red Hat/openshift/ose-rhel-coreos-8 (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Red Hat/device-mapper-multipathgeneric	*	Not reported
Red Hat/openshift/ose-rhel-coreos-8generic	*	Not reported
Red Hat/openshift/ose-rhel-coreos-9generic	*	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Red Hat/device-mapper-multipath, Red Hat/openshift/ose-rhel-coreos-8, Red Hat/openshift/ose-rhel-coreos-9.
Review the reported fix. Source-reported workaround: To mitigate this issue, implement strict local access controls on systems running `multipathd`. This limits the ability of unprivileged users to interact with the `multipathd` IPC socket, thereby preventing exploitation of the world-writable control socket. Ensure that only trusted administrators have local access to the system.

Evidence timeline and material changes

Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 11, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.