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medium · CVSS 6.2

CVE-2026-89329

Device-mapper-multipath: local denial of service via blocking ipc send operations

Published 11 Sept 2026 · Source updated 6 Nov 2026 · Retrieved 2026-11-06 01:53 UTC

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What happened?

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.

Description supplied by CVE Program. Formatting is simplified; follow the original advisory for full details.

Affected software and versions

Source-provided software and version information
SoftwareVersion informationFixed version
device-mapper-multipathRed HatDefault status: affectedSee vendor advisory
device-mapper-multipathRed HatDefault status: unknownSee vendor advisory
device-mapper-multipathRed HatDefault status: affectedSee vendor advisory
device-mapper-multipathRed HatDefault status: affectedSee vendor advisory
device-mapper-multipathRed HatDefault status: affectedSee vendor advisory
openshift/ose-rhel-coreos-8Red HatDefault status: affectedSee vendor advisory
openshift/ose-rhel-coreos-9Red HatDefault status: affectedSee vendor advisory
openshift/ose-rhel-coreos-9Red HatDefault status: affectedSee vendor advisory

Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.

Is it being exploited?

This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.

CISA data retrieved 2026-11-06 16:38 UTC. Check CISA ↗

How to respond

  1. Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
  2. Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
  3. Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.

Sources and remediation references

This public advisory does not determine whether a particular server is affected. Records are refreshed as sources change; verify urgent decisions against the original advisory.

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