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: 2026-08-18 15:11 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:25120 0 None None None 2026-06-10 20:00:22 UTC
Red Hat Product Errata RHSA-2026:25121 0 None None None 2026-06-10 21:39:06 UTC
Red Hat Product Errata RHSA-2026:25217 0 None None None 2026-06-11 10:13:34 UTC
Red Hat Product Errata RHSA-2026:33899 0 None None None 2026-07-01 00:15:53 UTC
Red Hat Product Errata RHSA-2026:33900 0 None None None 2026-07-01 00:13:37 UTC
Red Hat Product Errata RHSA-2026:34094 0 None None None 2026-07-01 08:59:06 UTC
Red Hat Product Errata RHSA-2026:34095 0 None None None 2026-07-01 08:40:58 UTC
Red Hat Product Errata RHSA-2026:35844 0 None None None 2026-07-06 04:20:44 UTC
Red Hat Product Errata RHSA-2026:35863 0 None None None 2026-07-06 04:51:31 UTC
Red Hat Product Errata RHSA-2026:36767 0 None None None 2026-07-08 14:51:32 UTC
Red Hat Product Errata RHSA-2026:41236 0 None None None 2026-07-17 12:52:35 UTC
Red Hat Product Errata RHSA-2026:55762 0 None None None 2026-08-17 15:53:03 UTC
Red Hat Product Errata RHSA-2026:55763 0 None None None 2026-08-17 15:49:54 UTC
Red Hat Product Errata RHSA-2026:55837 0 None None None 2026-08-17 18:25:32 UTC
Red Hat Product Errata RHSA-2026:56224 0 None None None 2026-08-18 15:11:21 UTC
Red Hat Product Errata RHSA-2026:56225 0 None None None 2026-08-18 15:11:29 UTC

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
Comment 3 errata-xmlrpc 2026-06-10 20:00:21 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:25120 https://access.redhat.com/errata/RHSA-2026:25120
Comment 4 errata-xmlrpc 2026-06-10 21:39:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:25121 https://access.redhat.com/errata/RHSA-2026:25121
Comment 5 errata-xmlrpc 2026-06-11 10:13:32 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:25217 https://access.redhat.com/errata/RHSA-2026:25217
Comment 6 errata-xmlrpc 2026-07-01 00:13:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:33900 https://access.redhat.com/errata/RHSA-2026:33900
Comment 7 errata-xmlrpc 2026-07-01 00:15:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:33899 https://access.redhat.com/errata/RHSA-2026:33899
Comment 8 errata-xmlrpc 2026-07-01 08:40:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:34095 https://access.redhat.com/errata/RHSA-2026:34095
Comment 9 errata-xmlrpc 2026-07-01 08:59:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:34094 https://access.redhat.com/errata/RHSA-2026:34094
Comment 10 errata-xmlrpc 2026-07-06 04:20:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:35844 https://access.redhat.com/errata/RHSA-2026:35844
Comment 11 errata-xmlrpc 2026-07-06 04:51:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:35863 https://access.redhat.com/errata/RHSA-2026:35863
Comment 12 errata-xmlrpc 2026-07-08 14:51:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:36767 https://access.redhat.com/errata/RHSA-2026:36767
Comment 13 errata-xmlrpc 2026-07-17 12:52:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:41236 https://access.redhat.com/errata/RHSA-2026:41236
Comment 15 errata-xmlrpc 2026-08-17 15:49:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:55763 https://access.redhat.com/errata/RHSA-2026:55763
Comment 16 errata-xmlrpc 2026-08-17 15:53:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:55762 https://access.redhat.com/errata/RHSA-2026:55762
Comment 17 errata-xmlrpc 2026-08-17 18:25:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:55837 https://access.redhat.com/errata/RHSA-2026:55837
Comment 18 errata-xmlrpc 2026-08-18 15:11:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:56224 https://access.redhat.com/errata/RHSA-2026:56224
Comment 19 errata-xmlrpc 2026-08-18 15:11:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:56225 https://access.redhat.com/errata/RHSA-2026:56225
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