CVE-2026-43125
dlm: validate length in dlm_search_rsb_tree
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.
INFO
Published Date :
May 6, 2026, 12:16 p.m.
Last Modified :
May 6, 2026, 1:07 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Add length validation for the len parameter.
- Ensure len does not exceed DLM_RESNAME_MAXLEN.
- Prevent out-of-bounds writes in dlm_search_rsb_tree().
References to Advisories, Solutions, and Tools
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CVE-2026-43125.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-43125 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-43125
weaknesses.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 06, 2026
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882 Added Reference https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6 Added Reference https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438 Added Reference https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71