PT-2026-37465 · Linux · Linux Kernel

Published 2026-05-06 · Updated 2026-05-13 · CVE-2026-43125

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.

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-43125

Affected Products

Linux Kernel

References · 15

• https://nvd.nist.gov/vuln/detail/CVE-2026-43125 · Security Note
• https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71 · Patch
• https://ubuntu.com/security/CVE-2026-43125 · Vendor Advisory
• https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438 · Patch
• https://cve.org/CVERecord?id=CVE-2026-43125 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-43125 · Vendor Advisory
• https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43125 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43125 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-43125 · Vendor Advisory
• https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882 · Patch
• https://twitter.com/lyrie_ai/status/2054593442768957703 · Twitter Post
• https://git.kernel.org/linus/080e5563f878c64e697b89e7439d730d0daad882 · Note
• https://docs.bell-sw.com/security/cves/CVE-2026-43125 · Note
• https://twitter.com/lyrie_ai/status/2054593441741308285 · Twitter Post