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CVE-2026-64280 (GCVE-0-2026-64280)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:49 – Updated: 2026-08-23 12:45
VLAI
Title
fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region()
Summary
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.
Severity
8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fa8dda1edef9ebc3af467c644c5533ac97171e12 , < 5352d488ce4ae5e8c68c080ad4c3a5f084ad5fbc (git)
Affected: fa8dda1edef9ebc3af467c644c5533ac97171e12 , < d7e787eee2ea619b6dbb98890472ee73daf2e7fd (git)
Affected: fa8dda1edef9ebc3af467c644c5533ac97171e12 , < a6a3884ff500f04f3088d6d09eec803cd35331a2 (git)
Affected: fa8dda1edef9ebc3af467c644c5533ac97171e12 , < 16381bda90b261a656ded0568630c1b857b2ebc8 (git)
Affected: fa8dda1edef9ebc3af467c644c5533ac97171e12 , < b50e6cd2395cde615f59b624819998d28c0668d6 (git)
Affected: fa8dda1edef9ebc3af467c644c5533ac97171e12 , < 59070040fd12e0b78d7b4d341d9f9a183237c5ff (git)
Affected: fa8dda1edef9ebc3af467c644c5533ac97171e12 , < fb2c0eab51ae5b02d2bae7d67c2cfbec39b57231 (git)
Affected: fa8dda1edef9ebc3af467c644c5533ac97171e12 , < fc3b071a7c8dc0f5d56defddf6e6fd5aaa3e1e27 (git)
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Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 5.10.266 , ≤ 5.10.* (semver)
Unaffected: 5.15.217 , ≤ 5.15.* (semver)
Unaffected: 6.1.184 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.39 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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      "source": "Red Hat CSAF VEX",
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      "product_status:known_affected": "370",
      "product_status:known_not_affected": "6",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64280",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64280.json",
      "version": "7"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.