CVE-2026-72156 (GCVE-0-2026-72156)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:53 – Updated: 2026-08-17 05:09
VLAI
Title
fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 5f8d4a9008307e0bf210906948953386935d361c , < e45ec24d8e986d79a8e07f49a816c414ad283622 (git)
Affected: 5f8d4a9008307e0bf210906948953386935d361c , < 0d3766fecd9b2db39a18b48021c15c522997ec25 (git)
Affected: 5f8d4a9008307e0bf210906948953386935d361c , < a1baee24df72ec8fd1d6925c1d5162ffff4ee3bf (git)
Affected: 5f8d4a9008307e0bf210906948953386935d361c , < c9ef79e34bc1eac4fd59051e5c7b96a74e59d46f (git)
Affected: 5f8d4a9008307e0bf210906948953386935d361c , < 3da8eaf5469eda2353b72038d644fabddb848ce1 (git)
Affected: 5f8d4a9008307e0bf210906948953386935d361c , < 43a1974da6bc7ce8f4d1dc1d03d56997428c29c3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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              "version": "7.1.5",
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              "version": "7.2",
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      "cpeApplicability": [
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          "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."
        }
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        "dateUpdated": "2026-08-17T05:09:16.408Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/e45ec24d8e986d79a8e07f49a816c414ad283622"
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        {
          "url": "https://git.kernel.org/stable/c/43a1974da6bc7ce8f4d1dc1d03d56997428c29c3"
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      "title": "fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()",
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    "datePublished": "2026-08-15T05:53:25.979Z",
    "dateReserved": "2026-08-09T03:40:39.909Z",
    "dateUpdated": "2026-08-17T05:09:16.408Z",
    "state": "PUBLISHED"
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            "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."
          }
        ],
        "id": "CVE-2026-72156",
        "lastModified": "2026-08-17T06:18:15.820",
        "metrics": {},
        "published": "2026-08-15T06:21:33.373",
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-18T13:35:02+00:00",
      "cve": "CVE-2026-72156",
      "id": "CVE-2026-72156",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72156.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T13:29:55Z",
      "cve": "CVE-2026-72156",
      "id": "CVE-2026-72156",
      "initial_release_date": "2026-08-31T13:29:55Z",
      "product_status:known_affected": "73",
      "product_status:known_not_affected": "289",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-72156",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-72156.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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