CVE-2026-72156

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux5f8d4a9008307e0bf210906948953386935d361c < e45ec24d8e986d79a8e07f49a816c414ad283622affected
LinuxLinux5f8d4a9008307e0bf210906948953386935d361c < 0d3766fecd9b2db39a18b48021c15c522997ec25affected
LinuxLinux5f8d4a9008307e0bf210906948953386935d361c < a1baee24df72ec8fd1d6925c1d5162ffff4ee3bfaffected
LinuxLinux5f8d4a9008307e0bf210906948953386935d361c < c9ef79e34bc1eac4fd59051e5c7b96a74e59d46faffected
LinuxLinux5f8d4a9008307e0bf210906948953386935d361c < 3da8eaf5469eda2353b72038d644fabddb848ce1affected
LinuxLinux5f8d4a9008307e0bf210906948953386935d361c < 43a1974da6bc7ce8f4d1dc1d03d56997428c29c3affected
LinuxLinux6.0affected
LinuxLinux0 < 6.0unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References