CVE-2026-45955

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. the CNA's CVSS baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: 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/md-llbitmap: fix percpu_ref not resurrected on suspend timeout

When llbitmap_suspend_timeout() times out waiting for percpu_ref to become zero, it returns -ETIMEDOUT without resurrecting the percpu_ref. The caller (md_llbitmap_daemon_fn) then continues to the next page without calling llbitmap_resume(), leaving the percpu_ref in a killed state permanently.

Fix this by resurrecting the percpu_ref before returning the error, ensuring the page control structure remains usable for subsequent operations.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
36(Track)
EG Risk 36/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

May 27, 2026

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Jun 11, 2026
No patch confirmed yet.
generic

md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d119bd2e1643cc023210ff3c6f0657e4f914e71d
generic

md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2446d099350185caeed19ab2c0270451a97296fb
generic

md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/095417d6b669c2dec39a5842ccb94df915f97f54

Vendor Advisories for CVE-2026-45955(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 @ 6.18.14—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

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (103 versions)6.18.14-1—

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 217 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-45955?
CVE-2026-45955 is a high vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout When llbitmapsuspendtimeout() times out waiting for percpu_ref to become zero, it returns -ETIMEDOUT without resurrecting the percpu_ref. The caller…
When was CVE-2026-45955 disclosed?
CVE-2026-45955 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45955 actively exploited?
CVE-2026-45955 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 97.6% of all scored CVEs.
What is the CVSS score of CVE-2026-45955?
CVE-2026-45955 has a CVSS v4.0 base score of 7.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-45955?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45955, 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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