PT-2026-37465 · Linux+2 · Linux Kernel+2

CVE-2026-43125 · Published 2026-05-06 · Updated 2026-07-24

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the Distributed Lock Manager (DLM) where the len parameter in the dlm dump rsb name() function is not validated. Because this parameter is derived from network messages, providing a value that exceeds DLM RESNAME MAXLEN can lead to an out-of-bounds write within the dlm search rsb tree() function, potentially resulting in a buffer overflow.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Memory Corruption

Weakness Enumeration

CWE-787

CWE-130

Related Identifiers

ALSA-2026:25120

ALSA-2026:25121

ALSA-2026:25217

CVE-2026-43125

OESA-2026-2674

OESA-2026-2869

OESA-2026-3157

RHSA-2026:25120

RHSA-2026:25121

RHSA-2026:25217

RHSA-2026:33899

RHSA-2026:33900

RHSA-2026:34094

RHSA-2026:34095

RHSA-2026:41236

USN-8490-1

USN-8490-2

USN-8491-1

USN-8508-1

USN-8545-1

USN-8546-1

USN-8604-1

USN-8605-1

Affected Products

Linuxmint

Linux Kernel

Rocky Linux

References · 559

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43125.json · Exploit
• https://ubuntu.com/security/CVE-2026-23145 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45966 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43468 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-46322 · Security Note
• https://ubuntu.com/security/CVE-2026-31657 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23018 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43185 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23173 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23020 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45988 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8604-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31588 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43139 · Security Note
• https://ubuntu.com/security/CVE-2026-23086 · Vendor Advisory