CVE-2026-43125

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-06. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
34.8%
KEV
Not listed

Published

May 6, 2026

Last Modified

July 20, 2026

Advisory Details (13)

Auto-updated Jul 20, 2026
Patch available. Sources: redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.6 Extended Update Support.

https://access.redhat.com/errata/RHSA-2026:34094
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2026:33900
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support

https://access.redhat.com/errata/RHSA-2026:33899
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:25217
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:25121
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:25120
generic

dlm: validate length in dlm_search_rsb_tree - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71
generic

dlm: validate length in dlm_search_rsb_tree - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438
generic

dlm: validate length in dlm_search_rsb_tree - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6
generic

dlm: validate length in dlm_search_rsb_tree - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882
redhat

Affected: Red Hat Enterprise Linux 10",

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43125.json
redhat Patch Available

2467234 – (CVE-2026-43125) CVE-2026-43125 kernel: dlm: validate length in dlm_search_rsb_tree

Affected: Red Hat Enterprise Linux 8

https://bugzilla.redhat.com/show_bug.cgi?id=2467234
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-43125

Vendor Advisories for CVE-2026-43125(12)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-687.15.1.el9_82026-06-11redhat
redhatkernel-rt-0:4.18.0-553.132.1.rt7.473.el8_102026-06-10redhat
redhatkernel-0:4.18.0-553.132.1.el8_102026-06-10redhat
linuxKernel @ 6.12.75—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 31× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 178 total refreshes for this CVE.

  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:24 UTCEPSS rescore
  3. 2026-07-20 19:32 UTCOSV refresh
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 02:29 UTCEPSS rescore
  7. 2026-07-18 10:04 UTCEPSS rescore
  8. 2026-07-16 17:03 UTCEPSS rescore
  9. 2026-07-15 16:57 UTCEPSS rescore
  10. 2026-07-15 02:00 UTCEPSS rescore
  11. 2026-07-13 22:30 UTCEPSS rescore
  12. 2026-07-13 06:13 UTCEPSS rescore
  13. 2026-07-12 05:46 UTCEPSS rescore
  14. 2026-07-11 08:27 UTCEPSS rescore
  15. 2026-07-09 19:10 UTCEPSS rescore
  16. 2026-07-08 15:16 UTCEPSS rescore
  17. 2026-07-07 13:46 UTCEPSS rescore
  18. 2026-07-06 16:27 UTCEPSS rescore
  19. 2026-07-06 02:23 UTCEPSS rescore
  20. 2026-07-05 02:30 UTCEPSS rescore
  21. 2026-07-04 06:31 UTCEPSS rescore
  22. 2026-07-01 15:06 UTCEPSS rescore
  23. 2026-06-30 23:22 UTCEPSS rescore
  24. 2026-06-29 14:06 UTCEPSS rescore
  25. 2026-06-28 14:07 UTCEPSS rescore
Show 75 more
  1. 2026-06-28 04:56 UTCEPSS rescore
  2. 2026-06-27 03:08 UTCEPSS rescore
  3. 2026-06-25 13:49 UTCEPSS rescore
  4. 2026-06-25 13:49 UTCEPSS rescore
  5. 2026-06-24 14:05 UTCEPSS rescore
  6. 2026-06-23 21:33 UTCEPSS rescore
  7. 2026-06-22 14:25 UTCEPSS rescore
  8. 2026-06-22 14:25 UTCEPSS rescore
  9. 2026-06-21 14:56 UTCEPSS rescore
  10. 2026-06-21 14:56 UTCEPSS rescore
  11. 2026-06-21 01:59 UTCEPSS rescore
  12. 2026-06-19 19:25 UTCEPSS rescore
  13. 2026-06-18 17:52 UTCEPSS rescore
  14. 2026-06-18 17:52 UTCEPSS rescore
  15. 2026-06-17 17:53 UTCEPSS rescore
  16. 2026-06-16 17:52 UTCEPSS rescore
  17. 2026-06-15 17:49 UTCEPSS rescore
  18. 2026-06-15 04:15 UTCVendor advisory
  19. 2026-06-15 04:15 UTCGHSA enrichment
  20. 2026-06-15 00:13 UTCVendor advisory
  21. 2026-06-15 00:13 UTCGHSA enrichment
  22. 2026-06-14 19:51 UTCVendor advisory
  23. 2026-06-14 19:51 UTCGHSA enrichment
  24. 2026-06-14 15:56 UTCVendor advisory
  25. 2026-06-14 15:56 UTCGHSA enrichment
  26. 2026-06-14 11:39 UTCVendor advisory
  27. 2026-06-14 11:39 UTCGHSA enrichment
  28. 2026-06-14 07:42 UTCVendor advisory
  29. 2026-06-14 07:42 UTCGHSA enrichment
  30. 2026-06-13 23:00 UTCEPSS rescore
  31. 2026-06-13 00:44 UTCVendor advisory
  32. 2026-06-13 00:44 UTCGHSA enrichment
  33. 2026-06-12 23:12 UTCEPSS rescore
  34. 2026-06-12 23:12 UTCEPSS rescore
  35. 2026-06-12 10:32 UTCVendor advisory
  36. 2026-06-12 10:32 UTCGHSA enrichment
  37. 2026-06-12 06:35 UTCVendor advisory
  38. 2026-06-12 06:35 UTCGHSA enrichment
  39. 2026-06-12 02:40 UTCVendor advisory
  40. 2026-06-12 02:40 UTCGHSA enrichment
  41. 2026-06-11 22:44 UTCVendor advisory
  42. 2026-06-11 22:44 UTCGHSA enrichment
  43. 2026-06-11 18:49 UTCVendor advisory
  44. 2026-06-11 18:49 UTCGHSA enrichment
  45. 2026-06-11 14:53 UTCVendor advisory
  46. 2026-06-11 14:53 UTCGHSA enrichment
  47. 2026-06-11 14:00 UTCEPSS rescore
  48. 2026-06-11 10:58 UTCVendor advisory
  49. 2026-06-11 10:58 UTCGHSA enrichment
  50. 2026-06-11 06:57 UTCVendor advisory
  51. 2026-06-11 06:57 UTCGHSA enrichment
  52. 2026-06-11 03:01 UTCVendor advisory
  53. 2026-06-11 03:01 UTCGHSA enrichment
  54. 2026-06-10 23:05 UTCGHSA enrichment
  55. 2026-06-10 22:18 UTCEPSS rescore
  56. 2026-06-10 19:10 UTCGHSA enrichment
  57. 2026-06-10 15:14 UTCGHSA enrichment
  58. 2026-06-10 13:22 UTCEPSS rescore
  59. 2026-06-10 13:22 UTCEPSS rescore
  60. 2026-06-10 11:19 UTCGHSA enrichment
  61. 2026-06-10 07:23 UTCGHSA enrichment
  62. 2026-06-10 03:02 UTCGHSA enrichment
  63. 2026-06-09 23:06 UTCGHSA enrichment
  64. 2026-06-09 18:26 UTCGHSA enrichment
  65. 2026-06-09 14:31 UTCGHSA enrichment
  66. 2026-06-09 10:35 UTCGHSA enrichment
  67. 2026-06-09 06:34 UTCGHSA enrichment
  68. 2026-06-09 02:34 UTCGHSA enrichment
  69. 2026-06-08 22:16 UTCGHSA enrichment
  70. 2026-06-08 14:17 UTCEPSS rescore
  71. 2026-06-08 14:17 UTCEPSS rescore
  72. 2026-06-08 11:38 UTCGHSA enrichment
  73. 2026-06-08 07:42 UTCGHSA enrichment
  74. 2026-06-08 03:47 UTCGHSA enrichment
  75. 2026-06-07 23:51 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2026-43125?
CVE-2026-43125 is a critical vulnerability published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: dlm: validate length in dlmsearchrsb_tree The len parameter in dlmdumprsb_name() is not validated and comes from network messages. When it exceeds DLMRESNAMEMAXLEN, it can cause out-of-bounds write in dlmsearchrsb_tree(). Add…
When was CVE-2026-43125 disclosed?
CVE-2026-43125 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on July 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43125 actively exploited?
CVE-2026-43125 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 34.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43125?
CVE-2026-43125 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-43125?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43125, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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