EUVD-2026-76186
GHSA-gm43-73c3-chhw
Severity by source
AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Default RHEL socket permissions restrict multipathd access to root or privileged users, so PR:L more accurately reflects typical exploitation prerequisites than the provided PR:N.
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Denial of service in multipathd allows a local attacker with access to the UNIX control socket to permanently block the daemon's listener thread by sending valid commands and then refusing to read the replies. This renders legitimate IPC operations - such as multipath path queries and storage management commands - unable to complete until the daemon is restarted. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires local access to the multipathd UNIX domain socket, typically located at /run/multipathd.socket. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) yields a 6.2 medium, reflecting a local, no-privilege, high-availability-impact denial of service. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply Red Hat-provided errata packages for the relevant RHEL or OpenShift version once released; monitor https://access.redhat.com/security/cve/CVE-2026-89329 for errata issuance, as no specific fixed package version was confirmed in the available data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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