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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 5f8d4a9008307e0bf210906948953386935d361c, < e45ec24d8e986d79a8e07f49a816c414ad283622; >= 5f8d4a9008307e0bf210906948953386935d361c, < 0d3766fecd9b2db39a18b48021c15c522997ec25; >= 5f8d4a9008307e0bf210906948953386935d361c, < a1baee24df72ec8fd1d6925c1d5162ffff4ee3bf; >= 5f8d4a9008307e0bf210906948953386935d361c, < c9ef79e34bc1eac4fd59051e5c7b96a74e59d46f; >= 5f8d4a9008307e0bf210906948953386935d361c, < 3da8eaf5469eda2353b72038d644fabddb848ce1; >= 5f8d4a9008307e0bf210906948953386935d361c, < 43a1974da6bc7ce8f4d1dc1d03d56997428c29c3 |
| Linux | Linux | 6.0 |
References
- https://git.kernel.org/stable/c/0d3766fecd9b2db39a18b48021c15c522997ec25
- https://git.kernel.org/stable/c/3da8eaf5469eda2353b72038d644fabddb848ce1
- https://git.kernel.org/stable/c/43a1974da6bc7ce8f4d1dc1d03d56997428c29c3
- https://git.kernel.org/stable/c/a1baee24df72ec8fd1d6925c1d5162ffff4ee3bf
- https://git.kernel.org/stable/c/c9ef79e34bc1eac4fd59051e5c7b96a74e59d46f
- https://git.kernel.org/stable/c/e45ec24d8e986d79a8e07f49a816c414ad283622
Timeline
- Published
- Aug 15, 2026
- Last modified
- Aug 17, 2026
- NVD status
- Received