{
  "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-2022-50731",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-50731",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-24T12:22:51.122Z",
    "updatedAt": "2026-05-11T19:24:25.645Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "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: akcipher - default implementation for setting a private key",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: akcipher - default implementation for setting a private key\n\nChanges from v1:\n  * removed the default implementation from set_pub_key: it is assumed that\n    an implementation must always have this callback defined as there are\n    no use case for an algorithm, which doesn't need a public key\n\nMany akcipher implementations (like ECDSA) support only signature\nverifications, so they don't have all callbacks defined.\n\nCommit 78a0324f4a53 (\"crypto: akcipher - default implementations for\nrequest callbacks\") introduced default callbacks for sign/verify\noperations, which just return an error code.\n\nHowever, these are not enough, because before calling sign the caller would\nlikely call set_priv_key first on the instantiated transform (as the\nin-kernel testmgr does). This function does not have a default stub, so the\nkernel crashes, when trying to set a private key on an akcipher, which\ndoesn't support signature generation.\n\nI've noticed this, when trying to add a KAT vector for ECDSA signature to\nthe testmgr.\n\nWith this patch the testmgr returns an error in dmesg (as it should)\ninstead of crashing the kernel NULL ptr dereference.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "78a0324f4a5328088fea9426cfe1d1851276c475",
              "status": "affected",
              "versionType": "git",
              "lessThan": "95c4e20adc3ea00d1594a2a05d9b187ed12ffa8e"
            },
            {
              "version": "78a0324f4a5328088fea9426cfe1d1851276c475",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a1354bdd191d533211b7cb723aa76a66f516f197"
            },
            {
              "version": "78a0324f4a5328088fea9426cfe1d1851276c475",
              "status": "affected",
              "versionType": "git",
              "lessThan": "779a9930f3e152c82699feb389a0e6d6644e747e"
            },
            {
              "version": "78a0324f4a5328088fea9426cfe1d1851276c475",
              "status": "affected",
              "versionType": "git",
              "lessThan": "85bc736a18b872f54912e8bb70682d11770aece0"
            },
            {
              "version": "78a0324f4a5328088fea9426cfe1d1851276c475",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f9058178597059d6307efe96a7916600f8ede08c"
            },
            {
              "version": "78a0324f4a5328088fea9426cfe1d1851276c475",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bc155c6c188c2f0c5749993b1405673d25a80389"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.2",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.2"
            },
            {
              "version": "5.4.220",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.150",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.75",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.19.17",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "version": "6.0.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "version": "6.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}