Bug 2467234 (CVE-2026-43125) - CVE-2026-43125 kernel: dlm: validate length in dlm_search_rsb_tree
Summary: CVE-2026-43125 kernel: dlm: validate length in dlm_search_rsb_tree
Keywords:
Status: NEW
Alias: CVE-2026-43125
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-06 13:12 UTC by OSIDB Bzimport
Modified: 2026-05-06 17:41 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-05-06 13:12:15 UTC 
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.
Comment 1 Keith Grant 2026-05-06 17:40:17 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050619-CVE-2026-43125-c9f9@gregkh/T
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