CVE-2026-43321

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-08. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: 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:

bpf: Properly mark live registers for indirect jumps

For a gotox rX instruction the rX register should be marked as used in the compute_insn_live_regs() function. Fix this.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
2.3%
KEV
Not listed

Published

May 8, 2026

Last Modified

May 15, 2026

Advisory Details (2)

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

bpf: Properly mark live registers for indirect jumps - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d1aab1ca576c90192ba961094d51b0be6355a4d6
generic

bpf: Properly mark live registers for indirect jumps - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7beae54111c34ca63357ef120e115889b915beb5

Vendor Advisories for CVE-2026-43321(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 / 40× 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 156 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. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-06-29 14:06 UTCEPSS rescore
  13. 2026-06-28 14:07 UTCEPSS rescore
  14. 2026-06-28 05:09 UTCEG score recompute
  15. 2026-06-28 05:09 UTCVendor advisory
  16. 2026-06-28 05:09 UTCGHSA enrichment
  17. 2026-06-28 04:56 UTCEPSS rescore
  18. 2026-06-27 14:09 UTCEG score recompute
  19. 2026-06-27 14:09 UTCVendor advisory
  20. 2026-06-27 14:09 UTCGHSA enrichment
  21. 2026-06-27 03:08 UTCEPSS rescore
  22. 2026-06-26 21:33 UTCEG score recompute
  23. 2026-06-26 21:33 UTCVendor advisory
  24. 2026-06-26 21:33 UTCGHSA enrichment
  25. 2026-06-25 13:49 UTCEPSS rescore
Show 75 more
  1. 2026-06-25 13:49 UTCEPSS rescore
  2. 2026-06-24 14:05 UTCEPSS rescore
  3. 2026-06-23 21:33 UTCEPSS rescore
  4. 2026-06-22 14:25 UTCEPSS rescore
  5. 2026-06-22 14:25 UTCEPSS rescore
  6. 2026-06-21 14:56 UTCEPSS rescore
  7. 2026-06-21 14:56 UTCEPSS rescore
  8. 2026-06-21 01:59 UTCEPSS rescore
  9. 2026-06-19 19:25 UTCEPSS rescore
  10. 2026-06-18 17:52 UTCEPSS rescore
  11. 2026-06-18 17:52 UTCEPSS rescore
  12. 2026-06-17 17:53 UTCEPSS rescore
  13. 2026-06-17 01:59 UTCEG score recompute
  14. 2026-06-17 01:59 UTCGHSA enrichment
  15. 2026-06-16 17:52 UTCEPSS rescore
  16. 2026-06-15 17:49 UTCEPSS rescore
  17. 2026-06-15 05:22 UTCEG score recompute
  18. 2026-06-15 05:22 UTCVendor advisory
  19. 2026-06-15 05:22 UTCGHSA enrichment
  20. 2026-06-14 16:19 UTCEG score recompute
  21. 2026-06-14 16:19 UTCVendor advisory
  22. 2026-06-14 16:19 UTCGHSA enrichment
  23. 2026-06-14 02:59 UTCEG score recompute
  24. 2026-06-14 02:59 UTCVendor advisory
  25. 2026-06-14 02:59 UTCGHSA enrichment
  26. 2026-06-13 23:00 UTCEPSS rescore
  27. 2026-06-12 23:12 UTCEPSS rescore
  28. 2026-06-12 23:12 UTCEPSS rescore
  29. 2026-06-12 20:27 UTCEG score recompute
  30. 2026-06-12 20:27 UTCVendor advisory
  31. 2026-06-12 20:27 UTCGHSA enrichment
  32. 2026-06-12 06:16 UTCEG score recompute
  33. 2026-06-12 06:16 UTCVendor advisory
  34. 2026-06-12 06:16 UTCGHSA enrichment
  35. 2026-06-11 17:13 UTCEG score recompute
  36. 2026-06-11 17:13 UTCVendor advisory
  37. 2026-06-11 17:13 UTCGHSA enrichment
  38. 2026-06-11 14:00 UTCEPSS rescore
  39. 2026-06-11 02:55 UTCEG score recompute
  40. 2026-06-11 02:55 UTCVendor advisory
  41. 2026-06-11 02:55 UTCGHSA enrichment
  42. 2026-06-10 22:18 UTCEPSS rescore
  43. 2026-06-10 13:53 UTCEG score recompute
  44. 2026-06-10 13:53 UTCVendor advisory
  45. 2026-06-10 13:53 UTCGHSA enrichment
  46. 2026-06-10 13:22 UTCEPSS rescore
  47. 2026-06-10 13:22 UTCEPSS rescore
  48. 2026-06-10 00:50 UTCEG score recompute
  49. 2026-06-10 00:50 UTCVendor advisory
  50. 2026-06-10 00:50 UTCGHSA enrichment
  51. 2026-06-09 11:47 UTCEG score recompute
  52. 2026-06-09 11:47 UTCVendor advisory
  53. 2026-06-09 11:47 UTCGHSA enrichment
  54. 2026-06-08 22:45 UTCEG score recompute
  55. 2026-06-08 22:45 UTCVendor advisory
  56. 2026-06-08 22:45 UTCGHSA enrichment
  57. 2026-06-08 14:17 UTCEPSS rescore
  58. 2026-06-08 14:17 UTCEPSS rescore
  59. 2026-06-08 09:42 UTCEG score recompute
  60. 2026-06-08 09:42 UTCVendor advisory
  61. 2026-06-08 09:42 UTCGHSA enrichment
  62. 2026-06-07 20:40 UTCEG score recompute
  63. 2026-06-07 20:40 UTCVendor advisory
  64. 2026-06-07 20:40 UTCGHSA enrichment
  65. 2026-06-07 15:25 UTCEPSS rescore
  66. 2026-06-07 15:25 UTCEPSS rescore
  67. 2026-06-07 07:38 UTCEG score recompute
  68. 2026-06-07 07:38 UTCVendor advisory
  69. 2026-06-07 07:37 UTCGHSA enrichment
  70. 2026-06-06 18:35 UTCEG score recompute
  71. 2026-06-06 18:35 UTCVendor advisory
  72. 2026-06-06 18:35 UTCGHSA enrichment
  73. 2026-06-06 13:47 UTCEPSS rescore
  74. 2026-06-06 13:47 UTCEPSS rescore
  75. 2026-06-06 05:32 UTCEG score recompute

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-43321?
CVE-2026-43321 is a high vulnerability published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: bpf: Properly mark live registers for indirect jumps For a gotox rX instruction the rX register should be marked as used in the computeinsnlive_regs() function. Fix this.
When was CVE-2026-43321 disclosed?
CVE-2026-43321 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on May 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43321 actively exploited?
CVE-2026-43321 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-2026-43321?
CVE-2026-43321 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-43321?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43321, 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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