{
  "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-2026-31413",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-31413",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-04-12T05:36:14.632Z",
    "updatedAt": "2026-08-05T12:22:19.762Z",
    "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": "bpf: Fix unsound scalar forking in maybe_fork_scalars() for BPF_OR",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix unsound scalar forking in maybe_fork_scalars() for BPF_OR\n\nmaybe_fork_scalars() is called for both BPF_AND and BPF_OR when the\nsource operand is a constant.  When dst has signed range [-1, 0], it\nforks the verifier state: the pushed path gets dst = 0, the current\npath gets dst = -1.\n\nFor BPF_AND this is correct: 0 & K == 0.\nFor BPF_OR this is wrong:    0 | K == K, not 0.\n\nThe pushed path therefore tracks dst as 0 when the runtime value is K,\nproducing an exploitable verifier/runtime divergence that allows\nout-of-bounds map access.\n\nFix this by passing env->insn_idx (instead of env->insn_idx + 1) to\npush_stack(), so the pushed path re-executes the ALU instruction with\ndst = 0 and naturally computes the correct result for any opcode.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "dea9989a3f3961faede93752cd81eb5a9514d911",
              "status": "affected",
              "versionType": "git",
              "lessThan": "342aa1ee995ef5bbf876096dc3a5e51218d76fa4"
            },
            {
              "version": "4c122e8ae14950cf6b59d208fc5160f7c601e746",
              "status": "affected",
              "versionType": "git",
              "lessThan": "58bd87d0e69204dbd739e4387a1edb0c4b1644e7"
            },
            {
              "version": "e52567173ba86dbffb990595fbe60e2e83899372",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d13281ae7ea8902b21d99d10a2c8caf0bdec0455"
            },
            {
              "version": "bffacdb80b93b7b5e96b26fad64cc490a6c7d6c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c845894ebd6fb43226b3118d6b017942550910c5"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "6.12.75",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12.80"
            },
            {
              "version": "6.18.16",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.18.21"
            },
            {
              "version": "6.19.6",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.19.11"
            }
          ]
        }
      ]
    }
  }
}