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Fencer Intel
medium 5.1

CVE-2026-114038 json

Device-mapper-multipath: device-mapper-multipath: information disclosure via malformed format string

published 20d ago modified 4d ago also EUVD-2026-106990

cvss
5.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits
0
none known

Summary

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).

Patch / fix

  • multipath-tools Debian 14 0.15.1-1

debian advisories DEBIAN-CVE-2026-114038

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-114038 updated cvss 5.1

device-mapper-multipath: device-mapper-multipath: Information disclosure via malformed format string

  • Red Hat Enterprise Linux 6 kpartx, device-mapper-multipath-libs, device-mapper-multipath 0.9.9-18.el10
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 kpartx, libdmmp, device-mapper-multipath, device-mapper-multipath-libs, device-mapper-multipath-sysvinit, device-mapper-multipath 0.9.9-18.el10 Red Hat Enterprise Linux 8 kpartx, libdmmp, device-mapper-multipath, device-mapper-multipath-libs, device-mapper-multipath 0.9.9-18.el10 Red Hat Enterprise Linux 9 kpartx, device-mapper-multipath, device-mapper-multipath-libs, device-mapper-multipath 0.9.9-18.el10 Red Hat Enterprise Linux 10 device-mapper-multipath 0.9.9-18.el10 Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8, openshift/ose-rhel-coreos-9 Red Hat OpenShift Container Platform 5 openshift/ose-rhel-coreos-9
    affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
14d ago

Exploit prediction

0.12% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat OpenShift Container Platform 4
  • Red Hat Red Hat OpenShift Container Platform 5

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.