CVE-2026-45888

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-27. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the Linux kernel, the following vulnerability has been resolved:

md/raid1: fix memory leak in raid1_run()

raid1_run() calls setup_conf() which registers a thread via md_register_thread(). If raid1_set_limits() fails, the previously registered thread is not unregistered, resulting in a memory leak of the md_thread structure and the thread resource itself.

Add md_unregister_thread() to the error path to properly cleanup the thread, which aligns with the error handling logic of other paths in this function.

Compile tested only. Issue found using a prototype static analysis tool and code review.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 25, 2026

Advisory Details (4)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

md/raid1: fix memory leak in raid1_run() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ec10e3dc93994b87adf7c759a4639fe34013989a
generic

md/raid1: fix memory leak in raid1_run() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c94fd6e8a71efd047ff36930e840f3c25679e136
generic

md/raid1: fix memory leak in raid1_run() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b37588b0282a2b3cdda9db1d53712745ce66dea0
generic

md/raid1: fix memory leak in raid1_run() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6abc7d5dcf0ee0f85e16e41c87fbd06231f28753

Vendor Advisories for CVE-2026-45888(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
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.

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (103 versions)6.18.14-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 35× 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 181 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-45888?
CVE-2026-45888 is a medium vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: md/raid1: fix memory leak in raid1_run() raid1run() calls setupconf() which registers a thread via mdregisterthread(). If raid1setlimits() fails, the previously registered thread is not unregistered, resulting in a memory leak of…
When was CVE-2026-45888 disclosed?
CVE-2026-45888 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45888 actively exploited?
CVE-2026-45888 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 94.5% of all scored CVEs.
What is the CVSS score of CVE-2026-45888?
CVE-2026-45888 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-45888?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45888, 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.

Dependency Blast Radius

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