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CVE-2026-89329— Device-mapper-multipath: local denial of service via blocking ipc send operations

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 中发现了一个缺陷。能够访问 UNIX 控制套接字的本地攻击者可以利用此漏洞：通过发送有效的命令，然后停止读取响应。这一行为会导致 的监听线程阻塞，从而引发拒绝服务（DoS），使得正常的进程间通信（IPC）操作可能挂起或超时。该问题不会导致权限提升、任意代码执行，也不影响数据的机密性或完整性。

CVSS 6.2 · Medium
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I. Basic Information for CVE-2026-89329

Vulnerability Information
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Vulnerability Title
Device-mapper-multipath: local denial of service via blocking ipc send operations
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1322
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-89329

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III. Intelligence Information for CVE-2026-89329

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Other References for CVE-2026-89329 (2)

Same Patch Batch · Red Hat · 2026-09-11 · 6 CVEs total

CVE-2026-89060 7.7 HIGH Stolostron/multicluster-observability-addon: cross-namespace secret disclosure in multiclu
CVE-2026-18495 6.1 MEDIUM Libtiff: libtiff: heap-buffer overflow via numeric truncation in the jpeg raw passthrough
CVE-2026-77159 5.5 MEDIUM Libvirt: unsafe chown in qemutpmemulatorpreparehost() allows arbitrary file ownership chan
CVE-2026-89298 4.9 MEDIUM Keycloak-services: keycloak-services: confidential client secret disclosed to view-clients
CVE-2026-88914 4.4 MEDIUM Gstreamer1-plugins-good: gstreamer: integer overflow and out-of-bounds read in qtdemux cea

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-1322

V. Comments for CVE-2026-89329

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