CVE-2026-43092

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-06. 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:

xsk: validate MTU against usable frame size on bind

AF_XDP bind currently accepts zero-copy pool configurations without verifying that the device MTU fits into the usable frame space provided by the UMEM chunk.

This becomes a problem since we started to respect tailroom which is subtracted from chunk_size (among with headroom). 2k chunk size might not provide enough space for standard 1500 MTU, so let us catch such settings at bind time. Furthermore, validate whether underlying HW will be able to satisfy configured MTU wrt XSK's frame size multiplied by supported Rx buffer chain length (that is exposed via net_device::xdp_zc_max_segs).

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
2.3%
KEV
Not listed

Published

May 6, 2026

Last Modified

May 19, 2026

Advisory Details (5)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic

xsk: validate MTU against usable frame size on bind - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f669d60db11dbabb96279f2b20f9d1cba43cddb2
generic

xsk: validate MTU against usable frame size on bind - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b2f4daa6422fd6cc0cec969794dab4a88ea4cea1
generic

xsk: validate MTU against usable frame size on bind - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a55793e5a97d4e39bdb380873a9780fe0010bff6
generic

xsk: validate MTU against usable frame size on bind - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/36ee60b569ba0dfb6f961333b90d19ab5b323fa9
generic

xsk: validate MTU against usable frame size on bind - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/25e1e91a8da819924df0b16e3812d7b24c8ce133

Vendor Advisories for CVE-2026-43092(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 / 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 101 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. 2026-07-01 15:06 UTCEPSS rescore
  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-28 14:07 UTCEPSS rescore
  16. 2026-06-28 04:56 UTCEPSS rescore
  17. 2026-06-27 03:08 UTCEPSS rescore
  18. 2026-06-25 13:49 UTCEPSS rescore
  19. 2026-06-25 13:49 UTCEPSS rescore
  20. 2026-06-24 14:05 UTCEPSS rescore
  21. 2026-06-23 21:33 UTCEPSS rescore
  22. 2026-06-22 14:25 UTCEPSS rescore
  23. 2026-06-22 14:25 UTCEPSS rescore
  24. 2026-06-21 14:56 UTCEPSS rescore
  25. 2026-06-21 14:56 UTCEPSS rescore
Show 75 more
  1. 2026-06-21 01:59 UTCEPSS rescore
  2. 2026-06-19 19:25 UTCEPSS rescore
  3. 2026-06-18 17:52 UTCEPSS rescore
  4. 2026-06-18 17:52 UTCEPSS rescore
  5. 2026-06-17 17:53 UTCEPSS rescore
  6. 2026-06-16 17:52 UTCEPSS rescore
  7. 2026-06-15 17:49 UTCEPSS rescore
  8. 2026-06-15 06:35 UTCEG score recompute
  9. 2026-06-15 06:34 UTCGHSA enrichment
  10. 2026-06-14 07:45 UTCEG score recompute
  11. 2026-06-14 07:45 UTCGHSA enrichment
  12. 2026-06-13 23:00 UTCEPSS rescore
  13. 2026-06-13 01:07 UTCEG score recompute
  14. 2026-06-13 01:07 UTCGHSA enrichment
  15. 2026-06-12 23:12 UTCEPSS rescore
  16. 2026-06-12 23:12 UTCEPSS rescore
  17. 2026-06-11 20:51 UTCEG score recompute
  18. 2026-06-11 20:51 UTCGHSA enrichment
  19. 2026-06-11 14:00 UTCEPSS rescore
  20. 2026-06-10 22:18 UTCEPSS rescore
  21. 2026-06-10 22:02 UTCEG score recompute
  22. 2026-06-10 22:02 UTCGHSA enrichment
  23. 2026-06-10 13:22 UTCEPSS rescore
  24. 2026-06-10 13:22 UTCEPSS rescore
  25. 2026-06-09 23:12 UTCEG score recompute
  26. 2026-06-09 23:12 UTCGHSA enrichment
  27. 2026-06-09 00:23 UTCEG score recompute
  28. 2026-06-09 00:23 UTCGHSA enrichment
  29. 2026-06-08 14:17 UTCEPSS rescore
  30. 2026-06-08 14:17 UTCEPSS rescore
  31. 2026-06-08 01:33 UTCEG score recompute
  32. 2026-06-08 01:33 UTCGHSA enrichment
  33. 2026-06-07 15:25 UTCEPSS rescore
  34. 2026-06-07 15:25 UTCEPSS rescore
  35. 2026-06-07 02:44 UTCEG score recompute
  36. 2026-06-07 02:44 UTCGHSA enrichment
  37. 2026-06-06 13:47 UTCEPSS rescore
  38. 2026-06-06 13:47 UTCEPSS rescore
  39. 2026-06-06 03:52 UTCEG score recompute
  40. 2026-06-06 03:52 UTCGHSA enrichment
  41. 2026-06-05 22:47 UTCEPSS rescore
  42. 2026-06-05 06:10 UTCEPSS rescore
  43. 2026-06-05 06:10 UTCEPSS rescore
  44. 2026-06-05 05:03 UTCEG score recompute
  45. 2026-06-05 05:03 UTCGHSA enrichment
  46. 2026-06-04 13:12 UTCEPSS rescore
  47. 2026-06-04 13:12 UTCEPSS rescore
  48. 2026-06-04 06:13 UTCEG score recompute
  49. 2026-06-04 06:13 UTCGHSA enrichment
  50. 2026-06-03 07:23 UTCEG score recompute
  51. 2026-06-03 07:23 UTCGHSA enrichment
  52. 2026-06-02 20:13 UTCEPSS rescore
  53. 2026-06-02 08:33 UTCEG score recompute
  54. 2026-06-02 08:33 UTCGHSA enrichment
  55. 2026-06-01 13:52 UTCEPSS rescore
  56. 2026-06-01 13:52 UTCEPSS rescore
  57. 2026-06-01 09:42 UTCEG score recompute
  58. 2026-06-01 09:42 UTCGHSA enrichment
  59. 2026-05-31 22:30 UTCEPSS rescore
  60. 2026-05-31 22:30 UTCEPSS rescore
  61. 2026-05-31 00:16 UTCEPSS rescore
  62. 2026-05-31 00:16 UTCEPSS rescore
  63. 2026-05-29 13:44 UTCEPSS rescore
  64. 2026-05-29 13:44 UTCEPSS rescore
  65. 2026-05-28 13:44 UTCEPSS rescore
  66. 2026-05-28 13:44 UTCEPSS rescore
  67. 2026-05-27 13:40 UTCEPSS rescore
  68. 2026-05-27 13:40 UTCEPSS rescore
  69. 2026-05-26 13:44 UTCEPSS rescore
  70. 2026-05-26 07:18 UTCEPSS rescore
  71. 2026-05-20 22:38 UTCEPSS rescore
  72. 2026-05-20 22:38 UTCEPSS rescore
  73. 2026-05-20 14:22 UTCEG score recompute
  74. 2026-05-20 14:22 UTCGHSA enrichment
  75. 2026-05-20 11:22 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-43092?
CVE-2026-43092 is a medium vulnerability published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: xsk: validate MTU against usable frame size on bind AF_XDP bind currently accepts zero-copy pool configurations without verifying that the device MTU fits into the usable frame space provided by the UMEM chunk. This becomes a…
When was CVE-2026-43092 disclosed?
CVE-2026-43092 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on May 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43092 actively exploited?
CVE-2026-43092 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43092?
CVE-2026-43092 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-43092?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43092, 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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