{
  "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-2024-49933",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-49933",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-10-21T18:01:55.087Z",
    "updatedAt": "2026-05-11T20:42:14.007Z",
    "importedAt": "2026-10-24T01:57:16.009Z",
    "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": "blk_iocost: fix more out of bound shifts",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk_iocost: fix more out of bound shifts\n\nRecently running UBSAN caught few out of bound shifts in the\nioc_forgive_debts() function:\n\nUBSAN: shift-out-of-bounds in block/blk-iocost.c:2142:38\nshift exponent 80 is too large for 64-bit type 'u64' (aka 'unsigned long\nlong')\n...\nUBSAN: shift-out-of-bounds in block/blk-iocost.c:2144:30\nshift exponent 80 is too large for 64-bit type 'u64' (aka 'unsigned long\nlong')\n...\nCall Trace:\n<IRQ>\ndump_stack_lvl+0xca/0x130\n__ubsan_handle_shift_out_of_bounds+0x22c/0x280\n? __lock_acquire+0x6441/0x7c10\nioc_timer_fn+0x6cec/0x7750\n? blk_iocost_init+0x720/0x720\n? call_timer_fn+0x5d/0x470\ncall_timer_fn+0xfa/0x470\n? blk_iocost_init+0x720/0x720\n__run_timer_base+0x519/0x700\n...\n\nActual impact of this issue was not identified but I propose to fix the\nundefined behaviour.\nThe proposed fix to prevent those out of bound shifts consist of\nprecalculating exponent before using it the shift operations by taking\nmin value from the actual exponent and maximum possible number of bits.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "bec02dbbafad534674309f8b948094900f456797",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1f61d509257d6a05763d05bf37943b35306522b1"
            },
            {
              "version": "bec02dbbafad534674309f8b948094900f456797",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f4ef9bef023d5c543cb0f3194ecacfd47ef590ec"
            },
            {
              "version": "bec02dbbafad534674309f8b948094900f456797",
              "status": "affected",
              "versionType": "git",
              "lessThan": "59121bb38fdc01434ea3fe361ee02b59f036227f"
            },
            {
              "version": "bec02dbbafad534674309f8b948094900f456797",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1ab2cfe19700fb3dde4c7dfec392acff34db3120"
            },
            {
              "version": "bec02dbbafad534674309f8b948094900f456797",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1b120f151871eb47ce9f283c007af3f8ae1d990e"
            },
            {
              "version": "bec02dbbafad534674309f8b948094900f456797",
              "status": "affected",
              "versionType": "git",
              "lessThan": "364022095bdd4108efdaaa68576afa4712a5d085"
            },
            {
              "version": "bec02dbbafad534674309f8b948094900f456797",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9bce8005ec0dcb23a58300e8522fe4a31da606fa"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.10",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.10"
            },
            {
              "version": "5.10.227",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.168",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.113",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.55",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.10.14",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.10.*"
            },
            {
              "version": "6.11.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.11.*"
            },
            {
              "version": "6.12",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}