Improper authorization in device-mapper-multipath
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-285.
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | device-mapper-multipath | unknown | — | No fix listed | CNA |
- device-mapper-multipath Vendor— Affected unknown Fixed in — No fix listed CNA
Remediation
Red Hat 2 advisories
- RHSA-2022:8453 Released 2022-11-15 · Red Hat rating Importantdevice-mapper-multipath security update
- Red Hat Enterprise Linux BaseOS (v. 9) device-mapper-multipath-0.8.7-12.el9_1.1
- RHSA-2022:7928 Released 2022-11-14 · Red Hat rating Importantdevice-mapper-multipath security update
- Red Hat Enterprise Linux BaseOS (v. 8) device-mapper-multipath-0.8.4-28.el8_7.1
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2022:7928 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2022:8453 |
Not affected: 7 products
- Red Hat CodeReady Linux Builder (v. 8)
- Red Hat CodeReady Linux Builder (v. 9)
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux BaseOS (v. 8)
- Red Hat Enterprise Linux BaseOS (v. 9)
- Red Hat Virtualization 4
Timeline
- 2026-10-02 Threatist record created from CVE-2022-3787
- 2026-10-03 Alias added: GHSA-m46g-8pc6-m8q7
- 2026-11-05 Affected versions changed · Red Hat
References
Sources
- CVE-2022-3787 · CVE Program
- CVE-2022-3787 · NVD
- FIRST EPSS
- GHSA-m46g-8pc6-m8q7 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-3787 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences