CVE-2026-43125 Details
Description
In the Linux kernel, the following vulnerability has been resolved: dlm: validate length in dlm_search_rsb_tree The len parameter in dlm_dump_rsb_name() is not validated and comes from network messages. When it exceeds DLM_RESNAME_MAXLEN, it can cause out-of-bounds write in dlm_search_rsb_tree(). Add length validation to prevent potential buffer overflow.
A buffer overflow vulnerability has been identified in the Linux kernel's Distributed Lock Manager (DLM) component. The issue arises because the 'len' parameter in the 'dlm_dump_rsb_name()' function is not properly validated. This parameter, which originates from network messages, can lead to an out-of-bounds write in the 'dlm_search_rsb_tree()' function when it exceeds the maximum allowed length. The vulnerability has been addressed by adding proper length validation to prevent such buffer overflow conditions.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been patched. Instructions for upgrading can be found in the official Linux kernel documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
| CWE-130 | Improper Handling of Length Parameter Inconsistency | redhat-SADP |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 3.4, < 6.12.75 >= 6.13, < 6.18.16 >= 6.19, < 6.19.6 |
CPE
Remediation
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Change History
15 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 25, 2026 | CVE Modified | redhat-SADP |
| Aug 20, 2026 | CVE Modified | redhat-SADP |
| Aug 19, 2026 | CVE Modified | redhat-SADP |
| Aug 18, 2026 | CVE Modified | redhat-SADP |
| Jul 20, 2026 | CVE Modified | redhat-SADP |
| Jul 15, 2026 | CVE Modified | redhat-SADP |
| Jul 9, 2026 | CVE Modified | redhat-SADP |
| Jul 6, 2026 | CVE Modified | redhat-SADP |
| Jul 2, 2026 | CVE Modified | redhat-SADP |
| Jul 1, 2026 | CVE Modified | redhat-SADP |
| Jun 30, 2026 | CVE Modified | redhat-SADP |
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 8, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | CVE Modified | kernel.org |
| May 6, 2026 | New CVE Received | kernel.org |