{
  "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-2022-50080",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-50080",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-06-18T11:02:23.003Z",
    "updatedAt": "2026-05-11T19:12:28.920Z",
    "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": "tee: add overflow check in register_shm_helper()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ntee: add overflow check in register_shm_helper()\n\nWith special lengths supplied by user space, register_shm_helper() has\nan integer overflow when calculating the number of pages covered by a\nsupplied user space memory region.\n\nThis causes internal_get_user_pages_fast() a helper function of\npin_user_pages_fast() to do a NULL pointer dereference:\n\n  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010\n  Modules linked in:\n  CPU: 1 PID: 173 Comm: optee_example_a Not tainted 5.19.0 #11\n  Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015\n  pc : internal_get_user_pages_fast+0x474/0xa80\n  Call trace:\n   internal_get_user_pages_fast+0x474/0xa80\n   pin_user_pages_fast+0x24/0x4c\n   register_shm_helper+0x194/0x330\n   tee_shm_register_user_buf+0x78/0x120\n   tee_ioctl+0xd0/0x11a0\n   __arm64_sys_ioctl+0xa8/0xec\n   invoke_syscall+0x48/0x114\n\nFix this by adding an an explicit call to access_ok() in\ntee_shm_register_user_buf() to catch an invalid user space address\nearly.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b37e0f17653c00b586cdbcdf0dbca475358ecffd"
            },
            {
              "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "965333345fe952cc7eebc8e3a565ffc709441af2"
            },
            {
              "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "578c349570d2a912401963783b36e0ec7a25c053"
            },
            {
              "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c12f0e6126ad223806a365084e86370511654bf1"
            },
            {
              "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2f8e79a1a6128214cb9b205a9869341af5dfb16b"
            },
            {
              "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "58c008d4d398f792ca67f35650610864725518fd"
            },
            {
              "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "573ae4f13f630d6660008f1974c0a8a29c30e18a"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.16",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.16"
            },
            {
              "version": "4.19.256",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.211",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.137",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.62",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.18.19",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.18.*"
            },
            {
              "version": "5.19.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "version": "6.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}