CVE-2026-45939

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:

gpib: Fix memory leak in ni_usb_init()

In ni_usb_init(), if ni_usb_setup_init() fails, the function returns -EFAULT without freeing the allocated writes buffer, leading to a memory leak.

Additionally, ni_usb_setup_init() returns 0 on failure, which causes ni_usb_init() to return -EFAULT, an inappropriate error code for this situation.

Fix the leak by freeing writes in the error path. Modify ni_usb_setup_init() to return -EINVAL on failure and propagate this error code in ni_usb_init().

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
2%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 24, 2026

Advisory Details (3)

Auto-updated Jun 24, 2026
No patch confirmed yet.
generic

gpib: Fix memory leak in ni_usb_init() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c899d4b62c0757a280831e89c1f3801b597e8f38
generic

gpib: Fix memory leak in ni_usb_init() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b89921eed8cf2d97250bac4be38dbcfbf048b586
generic

gpib: Fix memory leak in ni_usb_init() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9c97fcfb7a62dea893104a046d544da8ac23370b

Vendor Advisories for CVE-2026-45939(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—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 37× 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 185 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-45939?
CVE-2026-45939 is a medium vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: gpib: Fix memory leak in niusbinit() In niusbinit(), if niusbsetup_init() fails, the function returns -EFAULT without freeing the allocated writes buffer, leading to a memory leak. Additionally, niusbsetup_init() returns 0 on…
When was CVE-2026-45939 disclosed?
CVE-2026-45939 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45939 actively exploited?
CVE-2026-45939 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 97.8% of all scored CVEs.
What is the CVSS score of CVE-2026-45939?
CVE-2026-45939 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-45939?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45939, 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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