{
  "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-2026-46033",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-46033",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-27T12:56:42.038Z",
    "updatedAt": "2026-10-15T01:20:04.446Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "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: authencesn - reject short ahash digests during instance creation",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: authencesn - reject short ahash digests during instance creation\n\nauthencesn requires either a zero authsize or an authsize of at least\n4 bytes because the ESN encrypt/decrypt paths always move 4 bytes of\nhigh-order sequence number data at the end of the authenticated data.\n\nWhile crypto_authenc_esn_setauthsize() already rejects explicit\nnon-zero authsizes in the range 1..3, crypto_authenc_esn_create()\nstill copied auth->digestsize into inst->alg.maxauthsize without\nvalidating it.  The AEAD core then initialized the tfm's default\nauthsize from that value.\n\nAs a result, selecting an ahash with digest size 1..3, such as\ncbcmac(cipher_null), exposed authencesn instances whose default\nauthsize was invalid even though setauthsize() would have rejected the\nsame value.  AF_ALG could then trigger the ESN tail handling with a\ntoo-short tag and hit an out-of-bounds access.\n\nReject authencesn instances whose ahash digest size is in the invalid\nnon-zero range 1..3 so that no tfm can inherit an unsupported default\nauthsize.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f15f05b0a5de667c821a9727c33bce9d1d9b26dd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "77f59fb2d3aa33e90ec6cbbf45dcfb20ab82b1a9"
            },
            {
              "version": "f15f05b0a5de667c821a9727c33bce9d1d9b26dd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2f31cd1e64a079c845bca31d2da7b3c90a311726"
            },
            {
              "version": "f15f05b0a5de667c821a9727c33bce9d1d9b26dd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d4c6a6d08e70bb1083c7c405fc7faacbf19aebc0"
            },
            {
              "version": "f15f05b0a5de667c821a9727c33bce9d1d9b26dd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b69933e97efea238ebbfcf70c2b1be1cd03f13e3"
            },
            {
              "version": "f15f05b0a5de667c821a9727c33bce9d1d9b26dd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "67f1f0933cc3d78dde222842bcad2778ec7a0b88"
            },
            {
              "version": "f15f05b0a5de667c821a9727c33bce9d1d9b26dd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b42821c15445f93daea3e76ada682b2b7181c476"
            },
            {
              "version": "f15f05b0a5de667c821a9727c33bce9d1d9b26dd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9aff81e8217e9de2929084b03b3c7f81988c112b"
            },
            {
              "version": "f15f05b0a5de667c821a9727c33bce9d1d9b26dd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5db6ef9847717329f12c5ea8aba7e9f588a980c0"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.11",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.11"
            },
            {
              "version": "5.10.258",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.209",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.175",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.140",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.86",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.27",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}