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Fencer Intel
high 7.8

CVE-2022-3787 json

A vulnerability was found in the device-mapper-multipath.

published 3y ago modified 4mo ago also EUVD-2022-43134

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits
0
none known

Summary

A vulnerability was found in the device-mapper-multipath. The device-mapper-multipath allows local users to obtain root access, exploited alone or in conjunction with CVE-2022-41973. Local users that are able to write to UNIX domain sockets can bypass access controls and manipulate the multipath setup. This issue occurs because an attacker can repeat a keyword, which is mishandled when arithmetic ADD is used instead of bitwise OR. This could lead to local privilege escalation to root.

Patch / fix

  • device-mapper-multipath RHEL 9 0.8.7-12.el9_1.1
  • device-mapper-multipath RHEL 8 0.8.4-28.el8_7.1

red hat advisories RHSA-2022:8453RHSA-2022:7928

  • device-mapper-multipath AlmaLinux 9 0.8.7-12.el9_1.1
  • device-mapper-multipath AlmaLinux 8 0.8.4-28.el8_7.1

almalinux advisories ALSA-2022:8453ALSA-2022:7928

  • device-mapper-multipath Rocky Linux 9 0.8.7-12.el9_1.1
  • device-mapper-multipath Rocky Linux 8 0.8.4-28.el8_7.1

rocky linux advisories RLSA-2022:8453RLSA-2022:7928

Is CVE-2022-3787 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2022-3787 updated cvss 8.4

device-mapper-multipath: Regression of CVE-2022-41974 fix in Red Hat Enterprise Linux

  • Red Hat Enterprise Linux BaseOS (v. 8) device-mapper-multipath 0.8.4-28.el8_7.1
    fixed: vendor fix RHSA-2022:7928
  • Red Hat Enterprise Linux BaseOS (v. 9) device-mapper-multipath 0.8.7-12.el9_1.1
    fixed: vendor fix RHSA-2022:8453
  • Red Hat CodeReady Linux Builder (v. 8) kpartx-debuginfo 0.8.4-28.el8_7.1, libdmmp-debuginfo 0.8.4-28.el8_7.1, device-mapper-multipath-devel 0.8.4-28.el8_7.1, device-mapper-multipath-debuginfo 0.8.4-28.el8_7.1, device-mapper-multipath-debugsource 0.8.4-28.el8_7.1, device-mapper-multipath-libs-debuginfo 0.8.4-28.el8_7.1 Red Hat CodeReady Linux Builder (v. 9) kpartx-debuginfo 0.8.7-12.el9_1.1, libdmmp-debuginfo 0.8.7-12.el9_1.1, device-mapper-multipath-devel 0.8.7-12.el9_1.1, device-mapper-multipath-debuginfo 0.8.7-12.el9_1.1, device-mapper-multipath-debugsource 0.8.7-12.el9_1.1, device-mapper-multipath-libs-debuginfo 0.8.7-12.el9_1.1 Red Hat Enterprise Linux 6 kpartx, device-mapper-multipath, device-mapper-multipath-libs Red Hat Enterprise Linux 7 kpartx, libdmmp, device-mapper-multipath, device-mapper-multipath-libs, device-mapper-multipath-sysvinit Red Hat Enterprise Linux BaseOS (v. 8) kpartx 0.8.4-28.el8_7.1, libdmmp 0.8.4-28.el8_7.1, device-mapper-multipath-libs 0.8.4-28.el8_7.1 Red Hat Enterprise Linux BaseOS (v. 9) kpartx 0.8.7-12.el9_1.1, device-mapper-multipath-libs 0.8.7-12.el9_1.1
    +1 more products
    Red Hat Virtualization 4 redhat-virtualization-host-image-update
    not affected: vulnerable code not present

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
total
Assessed
last yr.

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • n/a device-mapper-multipath

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.