{
  "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-2022-50394",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-50394",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-09-18T13:33:12.992Z",
    "updatedAt": "2026-08-05T08:58:32.577Z",
    "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": "i2c: ismt: Fix an out-of-bounds bug in ismt_access()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: ismt: Fix an out-of-bounds bug in ismt_access()\n\nWhen the driver does not check the data from the user, the variable\n'data->block[0]' may be very large to cause an out-of-bounds bug.\n\nThe following log can reveal it:\n\n[   33.995542] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffcb3dc3a20\n[   33.995978] ismt_smbus 0000:00:05.0: I2C_SMBUS_BLOCK_DATA:  WRITE\n[   33.996475] ==================================================================\n[   33.996995] BUG: KASAN: out-of-bounds in ismt_access.cold+0x374/0x214b\n[   33.997473] Read of size 18446744073709551615 at addr ffff88810efcfdb1 by task ismt_poc/485\n[   33.999450] Call Trace:\n[   34.001849]  memcpy+0x20/0x60\n[   34.002077]  ismt_access.cold+0x374/0x214b\n[   34.003382]  __i2c_smbus_xfer+0x44f/0xfb0\n[   34.004007]  i2c_smbus_xfer+0x10a/0x390\n[   34.004291]  i2cdev_ioctl_smbus+0x2c8/0x710\n[   34.005196]  i2cdev_ioctl+0x5ec/0x74c\n\nFix this bug by checking the size of 'data->block[0]' first.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4a7bb1d93addb2f67e36fed00a53cb7f270d7b7a"
            },
            {
              "version": "13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "03b7ef7a6c5ca1ff553470166b4919db88b810f6"
            },
            {
              "version": "13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bfe41d966c860a8ad4c735639d616da270c92735"
            },
            {
              "version": "13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cdcbae2c5003747ddfd14e29db9c1d5d7e7c44dd"
            },
            {
              "version": "13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9ac541a0898e8ec187a3fa7024b9701cffae6bf2"
            },
            {
              "version": "13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "96c12fd0ec74641295e1c3c34dea3dce1b6c3422"
            },
            {
              "version": "13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a642469d464b2780a25a49b51ae56623c65eac34"
            },
            {
              "version": "13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "233348a04becf133283f0076e20b317302de21d9"
            },
            {
              "version": "13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "39244cc754829bf707dccd12e2ce37510f5b1f8d"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.9"
            },
            {
              "version": "4.9.337",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "version": "4.14.303",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.229",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.163",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.86",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.0.16",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "version": "6.1.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}