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CVE-2026-114038— Device-mapper-multipath: device-mapper-multipath: information disclosure via malformed format string

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 device-mapper-multipath 中发现了一个漏洞。本地用户可以通过向 multipath 守护进程发送一条以百分号（%）结尾的格式字符串命令，触发越界读取。该问题可能导致守护进程意外暴露内存，造成信息泄露；或导致守护进程崩溃，从而引发拒绝服务（DoS）攻击。

CVSS 5.1 · Medium
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I. Basic Information for CVE-2026-114038

Vulnerability Information
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Vulnerability Title
Device-mapper-multipath: device-mapper-multipath: information disclosure via malformed format string
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in device-mapper-multipath. A local user can trigger an out-of-bounds read by sending a command with a format string ending in a trailing percent character to the multipath daemon. This issue can allow the user to expose unintended daemon memory, leading to information disclosure, or cause the daemon to crash, resulting in a Denial of Service (DoS).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
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-2026-114038

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III. Intelligence Information for CVE-2026-114038

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Other References for CVE-2026-114038 (2)

Same Patch Batch · Red Hat · 2026-10-21 · 4 CVEs total

CVE-2026-92824 6.2 MEDIUM Libmodulemd: libmodulemd: out-of-bounds read when emitting rpm-map artifacts
CVE-2026-92822 6.2 MEDIUM Libmodulemd: libmodulemd: unbounded recursion when parsing nested xmd yaml
CVE-2026-92823 6.2 MEDIUM Libmodulemd: libmodulemd: missing decompressed-size limit when parsing compressed yaml

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-125

V. Comments for CVE-2026-114038

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