CVE-2026-43429

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-08. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 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:

USB: usbtmc: Use usb_bulk_msg_killable() with user-specified timeouts

The usbtmc driver accepts timeout values specified by the user in an ioctl command, and uses these timeouts for some usb_bulk_msg() calls. Since the user can specify arbitrarily long timeouts and usb_bulk_msg() uses unkillable waits, call usb_bulk_msg_killable() instead to avoid the possibility of the user hanging a kernel thread indefinitely.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
2.4%
KEV
Not listed

Published

May 8, 2026

Last Modified

May 20, 2026

Advisory Details (8)

Auto-updated Jun 16, 2026
No patch confirmed yet.
generic

USB: usbtmc: Use usb_bulk_msg_killable() with user-specified timeouts - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e14a0dcdf468c3ad616bb06696c7c64c36e736d8
generic

USB: usbtmc: Use usb_bulk_msg_killable() with user-specified timeouts - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d4f1c45bdff3f393f9ab7e76795901c442b9eb76
generic

USB: usbtmc: Use usb_bulk_msg_killable() with user-specified timeouts - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7fa72c369c23c27d1f64883c1e276af950557fb1
generic

USB: usbtmc: Use usb_bulk_msg_killable() with user-specified timeouts - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7784caa413a89487dd14dd5c41db8753483b2acb
generic

USB: usbtmc: Use usb_bulk_msg_killable() with user-specified timeouts - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/72c0a063489be183cfb99e7050aaef503bdb6449
generic

USB: usbtmc: Use usb_bulk_msg_killable() with user-specified timeouts - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6cb7dc91f057dd8ce44f6caa2995d8e22784ed0a
generic

USB: usbtmc: Use usb_bulk_msg_killable() with user-specified timeouts - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/39bd4097292fd8564cf2cfba9356f8ab11e38d12
generic

USB: usbtmc: Use usb_bulk_msg_killable() with user-specified timeouts - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0535f84cb94c9d8bcba0a2a5b3fac81b7d97235d

Vendor Advisories for CVE-2026-43429(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 38× 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 103 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-13 22:30 UTCEPSS rescore
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-11 08:27 UTCEPSS rescore
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-08 15:16 UTCEPSS rescore
  9. 2026-07-07 13:46 UTCEPSS rescore
  10. 2026-07-06 16:27 UTCEPSS rescore
  11. 2026-07-06 02:23 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-01 15:06 UTCEPSS rescore
  15. 2026-06-30 23:22 UTCEPSS rescore
  16. 2026-06-29 14:06 UTCEPSS rescore
  17. 2026-06-28 14:07 UTCEPSS rescore
  18. 2026-06-28 04:56 UTCEPSS rescore
  19. 2026-06-28 04:54 UTCEG score recompute
  20. 2026-06-28 04:54 UTCGHSA enrichment
  21. 2026-06-27 03:08 UTCEPSS rescore
  22. 2026-06-26 21:23 UTCEG score recompute
  23. 2026-06-26 21:23 UTCGHSA enrichment
  24. 2026-06-25 13:49 UTCEPSS rescore
  25. 2026-06-25 13:49 UTCEPSS rescore
Show 75 more
  1. 2026-06-24 14:05 UTCEPSS rescore
  2. 2026-06-22 14:25 UTCEPSS rescore
  3. 2026-06-22 14:25 UTCEPSS rescore
  4. 2026-06-21 14:56 UTCEPSS rescore
  5. 2026-06-21 14:56 UTCEPSS rescore
  6. 2026-06-21 01:59 UTCEPSS rescore
  7. 2026-06-19 19:25 UTCEPSS rescore
  8. 2026-06-18 17:52 UTCEPSS rescore
  9. 2026-06-18 17:52 UTCEPSS rescore
  10. 2026-06-17 17:53 UTCEPSS rescore
  11. 2026-06-16 17:52 UTCEPSS rescore
  12. 2026-06-16 08:13 UTCEG score recompute
  13. 2026-06-16 08:13 UTCGHSA enrichment
  14. 2026-06-15 17:49 UTCEPSS rescore
  15. 2026-06-15 04:14 UTCEG score recompute
  16. 2026-06-15 04:14 UTCGHSA enrichment
  17. 2026-06-14 02:38 UTCEG score recompute
  18. 2026-06-14 02:38 UTCGHSA enrichment
  19. 2026-06-13 23:00 UTCEPSS rescore
  20. 2026-06-12 23:12 UTCEPSS rescore
  21. 2026-06-12 23:12 UTCEPSS rescore
  22. 2026-06-12 02:05 UTCEG score recompute
  23. 2026-06-12 02:05 UTCGHSA enrichment
  24. 2026-06-11 14:00 UTCEPSS rescore
  25. 2026-06-11 00:30 UTCEG score recompute
  26. 2026-06-11 00:30 UTCGHSA enrichment
  27. 2026-06-10 22:18 UTCEPSS rescore
  28. 2026-06-10 13:22 UTCEPSS rescore
  29. 2026-06-10 13:22 UTCEPSS rescore
  30. 2026-06-09 22:44 UTCEG score recompute
  31. 2026-06-09 22:44 UTCGHSA enrichment
  32. 2026-06-08 20:41 UTCEG score recompute
  33. 2026-06-08 20:41 UTCGHSA enrichment
  34. 2026-06-08 14:17 UTCEPSS rescore
  35. 2026-06-08 14:17 UTCEPSS rescore
  36. 2026-06-07 17:16 UTCEG score recompute
  37. 2026-06-07 17:16 UTCGHSA enrichment
  38. 2026-06-07 15:25 UTCEPSS rescore
  39. 2026-06-07 15:25 UTCEPSS rescore
  40. 2026-06-06 15:41 UTCEG score recompute
  41. 2026-06-06 15:41 UTCGHSA enrichment
  42. 2026-06-06 13:47 UTCEPSS rescore
  43. 2026-06-06 13:47 UTCEPSS rescore
  44. 2026-06-05 22:47 UTCEPSS rescore
  45. 2026-06-05 14:06 UTCEG score recompute
  46. 2026-06-05 14:06 UTCGHSA enrichment
  47. 2026-06-05 06:10 UTCEPSS rescore
  48. 2026-06-05 06:10 UTCEPSS rescore
  49. 2026-06-04 13:12 UTCEPSS rescore
  50. 2026-06-04 13:12 UTCEPSS rescore
  51. 2026-06-04 12:31 UTCEG score recompute
  52. 2026-06-04 12:31 UTCGHSA enrichment
  53. 2026-06-03 10:55 UTCEG score recompute
  54. 2026-06-03 10:55 UTCGHSA enrichment
  55. 2026-06-02 20:13 UTCEPSS rescore
  56. 2026-06-02 09:20 UTCEG score recompute
  57. 2026-06-02 09:20 UTCGHSA enrichment
  58. 2026-06-01 13:52 UTCEPSS rescore
  59. 2026-06-01 13:52 UTCEPSS rescore
  60. 2026-06-01 07:44 UTCEG score recompute▲ 5.50
  61. 2026-06-01 07:44 UTCGHSA enrichment
  62. 2026-05-31 22:30 UTCEPSS rescore
  63. 2026-05-31 22:30 UTCEPSS rescore
  64. 2026-05-31 00:16 UTCEPSS rescore
  65. 2026-05-31 00:16 UTCEPSS rescore
  66. 2026-05-29 13:44 UTCEPSS rescore
  67. 2026-05-29 13:44 UTCEPSS rescore
  68. 2026-05-28 13:44 UTCEPSS rescore
  69. 2026-05-28 13:44 UTCEPSS rescore
  70. 2026-05-27 13:40 UTCEPSS rescore
  71. 2026-05-27 13:40 UTCEPSS rescore
  72. 2026-05-26 13:44 UTCEPSS rescore
  73. 2026-05-26 07:18 UTCEPSS rescore
  74. 2026-05-21 22:43 UTCEPSS rescore
  75. 2026-05-20 22:38 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-43429?
CVE-2026-43429 is a medium vulnerability published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: USB: usbtmc: Use usbbulkmsg_killable() with user-specified timeouts The usbtmc driver accepts timeout values specified by the user in an ioctl command, and uses these timeouts for some usbbulkmsg() calls. Since the user can specify…
When was CVE-2026-43429 disclosed?
CVE-2026-43429 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on May 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43429 actively exploited?
CVE-2026-43429 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43429?
CVE-2026-43429 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-43429?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43429, 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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