{"id":"CVE-2026-72156","state":"PUBLISHED","title":"fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()\n\nmpf_ops_parse_header() reads header_size from the bitstream at\nMPF_HEADER_SIZE_OFFSET (24). When header_size is zero, the expression\n*(buf + header_size - 1) reads one byte before the buffer start.\n\nSince initial_header_size is set to 71 in mpf_ops, the fpga-mgr core\nguarantees the buffer is large enough to reach MPF_HEADER_SIZE_OFFSET.\nThe only real gap is the zero header_size case, which cannot be\nresolved by providing a larger buffer, so return -EINVAL.","publishedAt":"2026-08-15T05:53:25.979Z","updatedAt":"2026-08-17T05:09:16.408Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5f8d4a9008307e0bf210906948953386935d361c","status":"affected","lessThan":"e45ec24d8e986d79a8e07f49a816c414ad283622","versionType":"git"},{"version":"5f8d4a9008307e0bf210906948953386935d361c","status":"affected","lessThan":"0d3766fecd9b2db39a18b48021c15c522997ec25","versionType":"git"},{"version":"5f8d4a9008307e0bf210906948953386935d361c","status":"affected","lessThan":"a1baee24df72ec8fd1d6925c1d5162ffff4ee3bf","versionType":"git"},{"version":"5f8d4a9008307e0bf210906948953386935d361c","status":"affected","lessThan":"c9ef79e34bc1eac4fd59051e5c7b96a74e59d46f","versionType":"git"},{"version":"5f8d4a9008307e0bf210906948953386935d361c","status":"affected","lessThan":"3da8eaf5469eda2353b72038d644fabddb848ce1","versionType":"git"},{"version":"5f8d4a9008307e0bf210906948953386935d361c","status":"affected","lessThan":"43a1974da6bc7ce8f4d1dc1d03d56997428c29c3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/fpga/microchip-spi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/fpga/microchip-spi.c"]}],"references":["https://git.kernel.org/stable/c/e45ec24d8e986d79a8e07f49a816c414ad283622","https://git.kernel.org/stable/c/0d3766fecd9b2db39a18b48021c15c522997ec25","https://git.kernel.org/stable/c/a1baee24df72ec8fd1d6925c1d5162ffff4ee3bf","https://git.kernel.org/stable/c/c9ef79e34bc1eac4fd59051e5c7b96a74e59d46f","https://git.kernel.org/stable/c/3da8eaf5469eda2353b72038d644fabddb848ce1","https://git.kernel.org/stable/c/43a1974da6bc7ce8f4d1dc1d03d56997428c29c3"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72156.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72156","state":"PUBLISHED","datePublished":"2026-08-15T05:53:25.979Z","dateUpdated":"2026-08-17T05:09:16.408Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.909Z"},"containers":{"cna":{"title":"fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()\n\nmpf_ops_parse_header() reads header_size from the bitstream at\nMPF_HEADER_SIZE_OFFSET (24). When header_size is zero, the expression\n*(buf + header_size - 1) reads one byte before the buffer start.\n\nSince initial_header_size is set to 71 in mpf_ops, the fpga-mgr core\nguarantees the buffer is large enough to reach MPF_HEADER_SIZE_OFFSET.\nThe only real gap is the zero header_size case, which cannot be\nresolved by providing a larger buffer, so return -EINVAL."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5f8d4a9008307e0bf210906948953386935d361c","status":"affected","lessThan":"e45ec24d8e986d79a8e07f49a816c414ad283622","versionType":"git"},{"version":"5f8d4a9008307e0bf210906948953386935d361c","status":"affected","lessThan":"0d3766fecd9b2db39a18b48021c15c522997ec25","versionType":"git"},{"version":"5f8d4a9008307e0bf210906948953386935d361c","status":"affected","lessThan":"a1baee24df72ec8fd1d6925c1d5162ffff4ee3bf","versionType":"git"},{"version":"5f8d4a9008307e0bf210906948953386935d361c","status":"affected","lessThan":"c9ef79e34bc1eac4fd59051e5c7b96a74e59d46f","versionType":"git"},{"version":"5f8d4a9008307e0bf210906948953386935d361c","status":"affected","lessThan":"3da8eaf5469eda2353b72038d644fabddb848ce1","versionType":"git"},{"version":"5f8d4a9008307e0bf210906948953386935d361c","status":"affected","lessThan":"43a1974da6bc7ce8f4d1dc1d03d56997428c29c3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/fpga/microchip-spi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/fpga/microchip-spi.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/e45ec24d8e986d79a8e07f49a816c414ad283622"},{"url":"https://git.kernel.org/stable/c/0d3766fecd9b2db39a18b48021c15c522997ec25"},{"url":"https://git.kernel.org/stable/c/a1baee24df72ec8fd1d6925c1d5162ffff4ee3bf"},{"url":"https://git.kernel.org/stable/c/c9ef79e34bc1eac4fd59051e5c7b96a74e59d46f"},{"url":"https://git.kernel.org/stable/c/3da8eaf5469eda2353b72038d644fabddb848ce1"},{"url":"https://git.kernel.org/stable/c/43a1974da6bc7ce8f4d1dc1d03d56997428c29c3"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:09:16.408Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}