SB20260816370 - Out-of-bounds read in Linux kernel fpga driver

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Main Vulnerability Database SB20260816370

SB20260816370 - Out-of-bounds read in Linux kernel fpga driver

Published: August 16, 2026

Security Bulletin ID SB20260816370
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-72156)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to out-of-bounds read in mpf_ops_parse_header() in the microchip-spi FPGA manager driver when parsing a crafted bitstream header with a zero header_size value. A local attacker can supply a crafted bitstream to trigger the out-of-bounds read and cause a denial of service.

The issue is triggered specifically when the header_size field at offset 24 is zero, causing a read one byte before the start of the buffer.


Remediation

Install update from vendor's website.

References