{
  "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-2025-39931",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-39931",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-04T07:30:55.964Z",
    "updatedAt": "2026-10-15T22:02:33.324Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "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": "crypto: af_alg - Set merge to zero early in af_alg_sendmsg",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: af_alg - Set merge to zero early in af_alg_sendmsg\n\nIf an error causes af_alg_sendmsg to abort, ctx->merge may contain\na garbage value from the previous loop.  This may then trigger a\ncrash on the next entry into af_alg_sendmsg when it attempts to do\na merge that can't be done.\n\nFix this by setting ctx->merge to zero near the start of the loop.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8ff590903d5fc7f5a0a988c38267a3d08e6393a2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "28f6f37abca7c5c9eb3959c66310f1d4d98b8aaf"
            },
            {
              "version": "8ff590903d5fc7f5a0a988c38267a3d08e6393a2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "db2b42425dfbde4983b0c20fb7cfa05f70e6a745"
            },
            {
              "version": "8ff590903d5fc7f5a0a988c38267a3d08e6393a2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6241b9e2809b12da9130894cf5beddf088dc1b8a"
            },
            {
              "version": "8ff590903d5fc7f5a0a988c38267a3d08e6393a2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2374c11189ef704a3e4863646369f1b8e6a27d71"
            },
            {
              "version": "8ff590903d5fc7f5a0a988c38267a3d08e6393a2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "24c1106504c625fabd3b7229611af617b4c27ac7"
            },
            {
              "version": "8ff590903d5fc7f5a0a988c38267a3d08e6393a2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "045ee26aa3920a47ec46d7fcb302420bf01fd753"
            },
            {
              "version": "8ff590903d5fc7f5a0a988c38267a3d08e6393a2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9574b2330dbd2b5459b74d3b5e9619d39299fc6f"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.38",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.38"
            },
            {
              "version": "5.10.260",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.211",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.154",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.108",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.49",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.16.9",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.16.*"
            },
            {
              "version": "6.17",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}