CVE-2026-64280

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-25. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: 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:

fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region()

afu_ioctl_dma_map() accepts a 64-bit length from userspace via DFL_FPGA_PORT_DMA_MAP ioctl without an upper bound check. The value is passed to afu_dma_pin_pages() where npages is derived as length >> PAGE_SHIFT and passed to pin_user_pages_fast() which takes int nr_pages, causing implicit truncation if length is very large.

Validate map.length at the ioctl entry point before calling afu_dma_map_region(), rejecting values whose page count exceeds INT_MAX.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

July 25, 2026

Last Modified

August 23, 2026

Advisory Details (3)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fc3b071a7c8dc0f5d56defddf6e6fd5aaa3e1e27
generic

fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fb2c0eab51ae5b02d2bae7d67c2cfbec39b57231
generic

fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/59070040fd12e0b78d7b4d341d9f9a183237c5ff

Vendor Advisories for CVE-2026-64280(2)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (500 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 7.2~rc5-1~exp1 (338 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.12.96-1 (32 versions)6.12.101-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (156 versions)7.1.4-1—

Data Freshness Timeline

(refreshed 24× in last 7d / 119× 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 149 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-64280?
CVE-2026-64280 is a high vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: fpga: dfl-afu: validate DMA mapping length in afudmamap_region() afuioctldma_map() accepts a 64-bit length from userspace via DFLFPGAPORTDMAMAP ioctl without an upper bound check. The value is passed to afudmapin_pages() where…
When was CVE-2026-64280 disclosed?
CVE-2026-64280 was first published in the National Vulnerability Database on July 25, 2026, with the most recent update on August 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64280 actively exploited?
CVE-2026-64280 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 93.6% of all scored CVEs.
What is the CVSS score of CVE-2026-64280?
CVE-2026-64280 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-64280?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64280, 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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