{
  "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-2023-53998",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53998",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-24T10:55:34.856Z",
    "updatedAt": "2026-05-11T19:53:18.694Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "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": "hwrng: virtio - Fix race on data_avail and actual data",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwrng: virtio - Fix race on data_avail and actual data\n\nThe virtio rng device kicks off a new entropy request whenever the\ndata available reaches zero.  When a new request occurs at the end\nof a read operation, that is, when the result of that request is\nonly needed by the next reader, then there is a race between the\nwriting of the new data and the next reader.\n\nThis is because there is no synchronisation whatsoever between the\nwriter and the reader.\n\nFix this by writing data_avail with smp_store_release and reading\nit with smp_load_acquire when we first enter read.  The subsequent\nreads are safe because they're either protected by the first load\nacquire, or by the completion mechanism.\n\nAlso remove the redundant zeroing of data_idx in random_recv_done\n(data_idx must already be zero at this point) and data_avail in\nrequest_entropy (ditto).",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f7f510ec195781c857ab76366a3e1c59e1caae42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "241ef15776a7c8505008db689175b320d345ecd3"
            },
            {
              "version": "f7f510ec195781c857ab76366a3e1c59e1caae42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a43bcb0b661cbbf3ad797d2aee6b6fd06b8fc69d"
            },
            {
              "version": "f7f510ec195781c857ab76366a3e1c59e1caae42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "77471e4912d3960dafe141e268c44be8024fe4dc"
            },
            {
              "version": "f7f510ec195781c857ab76366a3e1c59e1caae42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c76d991b6f01a5d931e7053a73bc9524975a5215"
            },
            {
              "version": "f7f510ec195781c857ab76366a3e1c59e1caae42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "22c30022cde6e2c88612b3a499223cfa912f1bc7"
            },
            {
              "version": "f7f510ec195781c857ab76366a3e1c59e1caae42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "318657b4c2077289659f1cd9e2a34f6a3b208e3e"
            },
            {
              "version": "f7f510ec195781c857ab76366a3e1c59e1caae42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2fc91f156b3f3446a1bce80cf4adedcbf41271c2"
            },
            {
              "version": "f7f510ec195781c857ab76366a3e1c59e1caae42",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ac52578d6e8d300dd50f790f29a24169b1edd26c"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.26",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.26"
            },
            {
              "version": "4.19.291",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.251",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.121",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.39",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.3.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "version": "6.4.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "version": "6.5",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}