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CVE-2026-64280

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

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · July 25, 2026

Updated · July 29, 2026

Description

A flaw was found in the Linux kernel's dfl-afu FPGA driver. A local user could exploit this vulnerability by providing an excessively large length value during Direct Memory Access (DMA) mapping operations. The system incorrectly truncates this value, leading to memory corruption. This could allow a local attacker to gain elevated privileges or execute arbitrary code on the system.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-190 · Integer Overflow or Wraparound