CVE-2026-114038
Device-mapper-multipath: device-mapper-multipath: information disclosure via malformed format string
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).
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
5.1
Device-mapper-multipath: device-mapper-multipath: information disclosure via malformed format string
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).
- Record
CVE-2026-114038- CVSS 3.1
- 5.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Weakness
- CWE-125
- Updated
- 2026-11-05
EUVDEUVD-2026-106990
5.1
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).
- Record
EUVD-2026-106990- CVSS 3.1
- 5.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Updated
- 2026-11-05
GitHub AdvisoriesGHSA-7rmr-p966-7g82
5.1
A flaw was found in device-mapper-multipath. A local user can trigger an out-of-bounds read by...
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).
- Record
GHSA-7rmr-p966-7g82- CVSS 3.1
- 5.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Weakness
- CWE-125
- Updated
- 2026-11-02
NVD
5.1
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).
- Record
CVE-2026-114038- CVSS 3.1
- 5.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Weakness
- CWE-125
- Updated
- 2026-11-05
OSVDEBIAN-CVE-2026-114038
5.1
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).
- Record
DEBIAN-CVE-2026-114038- CVSS 3.1
- 5.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Updated
- 2026-11-04
OSVOESA-2026-4715
5.1
multipath-tools security update
This package provides the multipath tool and the multipathd daemon to manage dm-multipath devices. multipath can detect and set up multipath maps. multipathd sets up multipath maps automatically, monitors path devices for failure, removal, or addition, and applies the necessary changes to the multipath maps to ensure continuous availability of the map devices.
Security Fix(es):
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).(CVE-2026-114038)
- Record
OESA-2026-4715- CVSS 3.1
- 5.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Updated
- 2026-11-04
OSVOESA-2026-4716
5.1
multipath-tools security update
This package provides the multipath tool and the multipathd daemon to manage dm-multipath devices. multipath can detect and set up multipath maps. multipathd sets up multipath maps automatically, monitors path devices for failure, removal, or addition, and applies the necessary changes to the multipath maps to ensure continuous availability of the map devices.
Security Fix(es):
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).(CVE-2026-114038)
- Record
OESA-2026-4716- CVSS 3.1
- 5.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Updated
- 2026-11-04
OSVOESA-2026-4717
5.1
multipath-tools security update
This package provides the multipath tool and the multipathd daemon to manage dm-multipath devices. multipath can detect and set up multipath maps. multipathd sets up multipath maps automatically, monitors path devices for failure, removal, or addition, and applies the necessary changes to the multipath maps to ensure continuous availability of the map devices.
Security Fix(es):
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).(CVE-2026-114038)
- Record
OESA-2026-4717- CVSS 3.1
- 5.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Updated
- 2026-11-04
OSVUBUNTU-CVE-2026-114038
5.1
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).
- Record
UBUNTU-CVE-2026-114038- CVSS 3.1
- 5.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
multipath-toolsDebian:12 |
All versions, plus listed versions 0.10.0-10.11.1-10.11.1-20.11.1-30.11.1-4 Show 26 moreShow less0.12.0-10.13.0-10.14.3-10.14.3-20.14.3-30.14.3-40.15.0-10.15.1-10.9.4-100.9.4-30.9.4-3+deb12u10.9.4-3+deb12u20.9.4-40.9.4-50.9.4-60.9.4-70.9.4-80.9.4-90.9.7-10.9.7-20.9.7-30.9.7-40.9.7-60.9.7-70.9.8-10.9.9-1 |
None known |
multipath-toolsDebian:13 |
All versions, plus listed versions 0.11.1-20.11.1-30.11.1-40.12.0-10.13.0-1 Show 6 moreShow less0.14.3-10.14.3-20.14.3-30.14.3-40.15.0-10.15.1-1 |
None known |
multipath-toolsDebian:14 |
before 0.15.1-1, plus listed versions 0.11.1-20.11.1-30.11.1-40.12.0-10.13.0-1 Show 5 moreShow less0.14.3-10.14.3-20.14.3-30.14.3-40.15.0-1 |
0.15.1-1 |
multipath-toolsopenEuler:22.03-LTS-SP4 |
before 0.8.7-30.oe2203sp4 | 0.8.7-30.oe2203sp4 |
multipath-toolsopenEuler:24.03-LTS-SP1 |
before 0.9.5-22.oe2403sp1 | 0.9.5-22.oe2403sp1 |
multipath-toolsopenEuler:24.03-LTS-SP3 |
before 0.9.5-22.oe2403sp3 | 0.9.5-22.oe2403sp3 |
multipath-toolsUbuntu:14.04:LTS |
All versions, plus listed versions 0.4.9-3ubuntu70.4.9-3ubuntu7.20.4.9-3ubuntu7.40.4.9-3ubuntu7.60.4.9-3ubuntu7.7 Show 7 moreShow less0.4.9-3ubuntu7.90.4.9-3ubuntu7.110.4.9-3ubuntu7.120.4.9-3ubuntu7.130.4.9-3ubuntu7.140.4.9-3ubuntu7.150.4.9-3ubuntu7.16 |
None known |
multipath-toolsUbuntu:16.04:LTS |
All versions, plus listed versions 0.5.0-7ubuntu70.5.0-7ubuntu80.5.0-7ubuntu90.5.0-7ubuntu100.5.0-7ubuntu11 Show 11 moreShow less0.5.0-7ubuntu120.5.0-7ubuntu140.5.0-7ubuntu150.5.0-7ubuntu160.5.0+git1.656f8865-5ubuntu10.5.0+git1.656f8865-5ubuntu20.5.0+git1.656f8865-5ubuntu2.10.5.0+git1.656f8865-5ubuntu2.20.5.0+git1.656f8865-5ubuntu2.30.5.0+git1.656f8865-5ubuntu2.40.5.0+git1.656f8865-5ubuntu2.5 |
None known |
multipath-toolsUbuntu:18.04:LTS |
All versions, plus listed versions 0.6.4-5ubuntu10.7.4-2ubuntu10.7.4-2ubuntu30.7.4-2ubuntu3.10.7.4-2ubuntu3.2 |
None known |
multipath-toolsUbuntu:20.04:LTS |
All versions, plus listed versions 0.7.9-3ubuntu60.7.9-3ubuntu70.8.3-1ubuntu10.8.3-1ubuntu20.8.3-1ubuntu2.10.8.3-1ubuntu2.20.8.3-1ubuntu2.30.8.3-1ubuntu2.4 |
None known |
Show 4 moreShow less
| Package | Affected | Fixed |
|---|---|---|
multipath-toolsUbuntu:22.04:LTS |
All versions, plus listed versions 0.8.5-2ubuntu20.8.5-2ubuntu30.8.8-1ubuntu10.8.8-1ubuntu1.22.04.10.8.8-1ubuntu1.22.04.30.8.8-1ubuntu1.22.04.4 |
None known |
multipath-toolsUbuntu:24.04:LTS |
All versions, plus listed versions 0.9.4-5ubuntu30.9.4-5ubuntu60.9.4-5ubuntu70.9.4-5ubuntu80.9.4-5ubuntu8.10.9.4-5ubuntu8.2 |
None known |
multipath-toolsUbuntu:26.10 |
All versions, plus listed versions 0.14.3-2ubuntu10.14.3-3ubuntu10.14.3-3ubuntu2 |
None known |
multipath-toolsUbuntu:26.04:LTS |
All versions, plus listed versions 0.11.1-3ubuntu20.12.0-1ubuntu10.12.0-1ubuntu20.12.0-1ubuntu30.14.3-2ubuntu1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | EUVD, NVD, OSV | |
| facts, products | CVE List | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-114038 is a medium vulnerability (CVSS 5.1) in Red Hat Enterprise Linux 10, published October 21, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 1st percentile. Fixed in multipath-tools 0.15.1-1.
References
access.redhat.com/security/cve/CVE-2026-114038
bugzilla.redhat.com/show_bug.cgi?id=2469787
nvd.nist.gov/vuln/detail/CVE-2026-114038
github.com/advisories/GHSA-7rmr-p966-7g82
security-tracker.debian.org/tracker/CVE-2026-114038
openeuler.org/zh/security/security-bulletins/detail?id=openEuler-SA-2026-4715
Show 5 moreShow less
openeuler.org/zh/security/security-bulletins/detail?id=openEuler-SA-2026-4716
openeuler.org/zh/security/security-bulletins/detail?id=openEuler-SA-2026-4717
ubuntu.com/security/CVE-2026-114038
cve.org/CVERecord?id=CVE-2026-114038
github.com/opensvc/multipath-tools/commit/d75d74f1d344cab8a98258773b85dbffa6895902