CVE-2026-46171

NVD 0.05.5▲
EchelonGraph scoreLOW confidence

Score 5.5 from GitHub Security Advisory published 2026-05-28.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa
Trending — 3 sources updated this week
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 0%CVSS: —Exploit: 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:

riscv: kvm: fix vector context allocation leak

When the second kzalloc (host_context.vector.datap) fails in kvm_riscv_vcpu_alloc_vector_context, the first allocation (guest_context.vector.datap) is leaked. Free it before returning.

CVSS v3
—
EG Score
5.5(low)
EPSS
2.7%
KEV
Not listed

Published

May 28, 2026

Last Modified

June 14, 2026

Advisory Details (3)

Auto-updated Jun 13, 2026
No patch confirmed yet.
generic

riscv: kvm: fix vector context allocation leak - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bd62c0f61bc722a097417401030c596cea8e21aa
generic

riscv: kvm: fix vector context allocation leak - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b7c958d7c1eb1cb9b2be7b5ee4129fcd66cec978
generic

riscv: kvm: fix vector context allocation leak - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1d57ab45ec5c0e22789de793bcf2a31ad6fb7d98

Vendor Advisories for CVE-2026-46171(2)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 58× 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 104 total refreshes for this CVE.

  1. 2026-07-16 10:21 UTCEG score recompute
  2. 2026-07-16 10:21 UTCGHSA enrichment
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-13 22:30 UTCEPSS rescore
  6. 2026-07-13 06:13 UTCEPSS rescore
  7. 2026-07-12 05:46 UTCEPSS rescore
  8. 2026-07-11 21:16 UTCEG score recompute
  9. 2026-07-11 21:16 UTCGHSA enrichment
  10. 2026-07-11 08:27 UTCEPSS rescore
  11. 2026-07-09 19:10 UTCEPSS rescore
  12. 2026-07-08 18:26 UTCEG score recompute
  13. 2026-07-08 18:26 UTCGHSA enrichment
  14. 2026-07-08 15:16 UTCEPSS rescore
  15. 2026-07-07 13:46 UTCEPSS rescore
  16. 2026-07-06 16:27 UTCEPSS rescore
  17. 2026-07-06 02:23 UTCEPSS rescore
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-02 14:14 UTCEG score recompute
  20. 2026-07-02 14:14 UTCGHSA enrichment
  21. 2026-07-01 15:07 UTCEPSS rescore
  22. 2026-07-01 03:07 UTCEG score recompute
  23. 2026-07-01 03:07 UTCGHSA enrichment
  24. 2026-06-30 23:22 UTCEPSS rescore
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 75 more
  1. 2026-06-29 14:06 UTCEPSS rescore
  2. 2026-06-29 13:45 UTCEG score recompute
  3. 2026-06-29 13:45 UTCGHSA enrichment
  4. 2026-06-28 14:07 UTCEPSS rescore
  5. 2026-06-28 07:32 UTCEG score recompute
  6. 2026-06-28 07:32 UTCGHSA enrichment
  7. 2026-06-28 04:56 UTCEPSS rescore
  8. 2026-06-28 04:56 UTCEPSS rescore
  9. 2026-06-27 05:28 UTCEG score recompute
  10. 2026-06-27 05:28 UTCGHSA enrichment
  11. 2026-06-27 03:08 UTCEPSS rescore
  12. 2026-06-26 02:06 UTCEG score recompute
  13. 2026-06-26 02:06 UTCGHSA enrichment
  14. 2026-06-25 13:49 UTCEPSS rescore
  15. 2026-06-24 22:45 UTCEG score recompute
  16. 2026-06-24 22:45 UTCGHSA enrichment
  17. 2026-06-24 14:05 UTCEPSS rescore
  18. 2026-06-23 21:33 UTCEPSS rescore
  19. 2026-06-23 21:33 UTCEPSS rescore
  20. 2026-06-22 14:25 UTCEPSS rescore
  21. 2026-06-22 14:25 UTCEPSS rescore
  22. 2026-06-21 14:56 UTCEPSS rescore
  23. 2026-06-21 14:56 UTCEPSS rescore
  24. 2026-06-21 01:59 UTCEPSS rescore
  25. 2026-06-21 01:59 UTCEPSS rescore
  26. 2026-06-18 17:52 UTCEPSS rescore
  27. 2026-06-18 17:52 UTCEPSS rescore
  28. 2026-06-18 01:49 UTCEG score recompute
  29. 2026-06-18 01:49 UTCGHSA enrichment
  30. 2026-06-17 17:53 UTCEPSS rescore
  31. 2026-06-16 23:45 UTCEG score recompute
  32. 2026-06-16 23:45 UTCGHSA enrichment
  33. 2026-06-16 17:52 UTCEPSS rescore
  34. 2026-06-15 21:39 UTCEG score recompute
  35. 2026-06-15 21:39 UTCGHSA enrichment
  36. 2026-06-15 17:49 UTCEPSS rescore
  37. 2026-06-14 23:28 UTCMITRE cvelistV5
  38. 2026-06-14 16:16 UTCEG score recompute
  39. 2026-06-14 16:16 UTCGHSA enrichment
  40. 2026-06-13 23:00 UTCEPSS rescore
  41. 2026-06-13 13:57 UTCEG score recompute
  42. 2026-06-13 13:57 UTCGHSA enrichment
  43. 2026-06-12 23:12 UTCEPSS rescore
  44. 2026-06-12 23:12 UTCEPSS rescore
  45. 2026-06-12 11:47 UTCEG score recompute▲ 5.50
  46. 2026-06-12 11:47 UTCGHSA enrichment
  47. 2026-06-11 14:00 UTCEPSS rescore
  48. 2026-06-11 13:11 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  49. 2026-06-10 22:18 UTCEPSS rescore
  50. 2026-06-10 13:22 UTCEPSS rescore
  51. 2026-06-10 13:22 UTCEPSS rescore
  52. 2026-06-09 15:08 UTCGHSA enrichment
  53. 2026-06-08 14:17 UTCEPSS rescore
  54. 2026-06-08 14:17 UTCEPSS rescore
  55. 2026-06-07 15:25 UTCEPSS rescore
  56. 2026-06-07 15:25 UTCEPSS rescore
  57. 2026-06-06 18:29 UTCGHSA enrichment
  58. 2026-06-06 13:47 UTCEPSS rescore
  59. 2026-06-06 13:47 UTCEPSS rescore
  60. 2026-06-05 22:47 UTCEPSS rescore
  61. 2026-06-05 06:10 UTCEPSS rescore
  62. 2026-06-05 06:10 UTCEPSS rescore
  63. 2026-06-04 13:12 UTCEPSS rescore
  64. 2026-06-04 13:12 UTCEPSS rescore
  65. 2026-06-03 21:50 UTCGHSA enrichment
  66. 2026-06-02 20:13 UTCEPSS rescore
  67. 2026-06-01 13:52 UTCEPSS rescore
  68. 2026-06-01 13:52 UTCEPSS rescore
  69. 2026-06-01 01:11 UTCEG score recompute
  70. 2026-06-01 01:11 UTCGHSA enrichment
  71. 2026-05-31 22:30 UTCEPSS rescore
  72. 2026-05-31 22:30 UTCEPSS rescore
  73. 2026-05-31 00:16 UTCEPSS rescore
  74. 2026-05-31 00:16 UTCEPSS rescore
  75. 2026-05-29 13:44 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2026-46171?
CVE-2026-46171 is a publicly disclosed vulnerability published on May 28, 2026. In the Linux kernel, the following vulnerability has been resolved: riscv: kvm: fix vector context allocation leak When the second kzalloc (host_context.vector.datap) fails in kvmriscvvcpuallocvector_context, the first allocation (guest_context.vector.datap) is leaked. Free it before returning.
When was CVE-2026-46171 disclosed?
CVE-2026-46171 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on June 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46171 actively exploited?
CVE-2026-46171 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2026-46171?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46171, 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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