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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.

OpenSVC multipath-tools for Linux是OpenSVC组织的一款管理Linux系统存储多路径设备以增强可用性与性能的工具集。 OpenSVC multipath-tools for Linux存在处理逻辑错误漏洞，该漏洞源于本地攻击者向 multipathd UNIX 控制套接字发送有效命令后停止读取回复，导致 multipathd 监听线程阻塞，造成拒绝服务，使合法的进程间通信操作挂起或超时。

CVSS 6.2 · Medium EPSS 0.16% · P5

Affected Version Matrix 7

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
Red Hat Red Hat OpenShift Container Platform 4 any affected
any affected
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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
Vulnerability Title
OpenSVC multipath-tools for Linux 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenSVC multipath-tools for Linux是OpenSVC组织的一款管理Linux系统存储多路径设备以增强可用性与性能的工具集。 OpenSVC multipath-tools for Linux存在处理逻辑错误漏洞，该漏洞源于本地攻击者向 multipathd UNIX 控制套接字发送有效命令后停止读取回复，导致 multipathd 监听线程阻塞，造成拒绝服务，使合法的进程间通信操作挂起或超时。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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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Vendor Advisories for CVE-2026-89329 (2)

Same Patch Batch · Red Hat · 2026-09-11 · 5 CVEs total

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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