CVE-2026-72156

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()

mpf_ops_parse_header() reads header_size from the bitstream at

MPF_HEADER_SIZE_OFFSET (24). When header_size is zero, the expression

*(buf + header_size - 1) reads one byte before the buffer start.

Since initial_header_size is set to 71 in mpf_ops, the fpga-mgr core

guarantees the buffer is large enough to reach MPF_HEADER_SIZE_OFFSET.

The only real gap is the zero header_size case, which cannot be

resolved by providing a larger buffer, so return -EINVAL.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References