{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-31690",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-31690",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-04-27T17:34:28.738Z",
    "updatedAt": "2026-05-11T22:13:45.476Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "firmware: thead: Fix buffer overflow and use standard endian macros",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: thead: Fix buffer overflow and use standard endian macros\n\nAddresses two issues in the TH1520 AON firmware protocol driver:\n\n1. Fix a potential buffer overflow where the code used unsafe pointer\n   arithmetic to access the 'mode' field through the 'resource' pointer\n   with an offset. This was flagged by Smatch static checker as:\n   \"buffer overflow 'data' 2 <= 3\"\n\n2. Replace custom RPC_SET_BE* and RPC_GET_BE* macros with standard\n   kernel endianness conversion macros (cpu_to_be16, etc.) for better\n   portability and maintainability.\n\nThe functionality was re-tested with the GPU power-up sequence,\nconfirming the GPU powers up correctly and the driver probes\nsuccessfully.\n\n[   12.702370] powervr ffef400000.gpu: [drm] loaded firmware\npowervr/rogue_36.52.104.182_v1.fw\n[   12.711043] powervr ffef400000.gpu: [drm] FW version v1.0 (build\n6645434 OS)\n[   12.719787] [drm] Initialized powervr 1.0.0 for ffef400000.gpu on\nminor 0",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "e4b3cbd840e565484d0ad8d260d27c057466ed17",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fbdb43f6bb2a15ed382d6eb0ef82c8b07b0d47bb"
            },
            {
              "version": "e4b3cbd840e565484d0ad8d260d27c057466ed17",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bd15a5deb5a7251dc1a0cf9186f0253f7eacdb97"
            },
            {
              "version": "e4b3cbd840e565484d0ad8d260d27c057466ed17",
              "status": "affected",
              "versionType": "git",
              "lessThan": "88c4bd90725557796c15878b7cb70066e9e6b5ab"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.15"
            },
            {
              "version": "6.18.23",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}