{
  "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-2021-47456",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47456",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-22T06:19:45.363Z",
    "updatedAt": "2026-05-11T13:55:04.351Z",
    "importedAt": "2026-10-24T01:56:36.661Z",
    "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": "can: peak_pci: peak_pci_remove(): fix UAF",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: peak_pci: peak_pci_remove(): fix UAF\n\nWhen remove the module peek_pci, referencing 'chan' again after\nreleasing 'dev' will cause UAF.\n\nFix this by releasing 'dev' later.\n\nThe following log reveals it:\n\n[   35.961814 ] BUG: KASAN: use-after-free in peak_pci_remove+0x16f/0x270 [peak_pci]\n[   35.963414 ] Read of size 8 at addr ffff888136998ee8 by task modprobe/5537\n[   35.965513 ] Call Trace:\n[   35.965718 ]  dump_stack_lvl+0xa8/0xd1\n[   35.966028 ]  print_address_description+0x87/0x3b0\n[   35.966420 ]  kasan_report+0x172/0x1c0\n[   35.966725 ]  ? peak_pci_remove+0x16f/0x270 [peak_pci]\n[   35.967137 ]  ? trace_irq_enable_rcuidle+0x10/0x170\n[   35.967529 ]  ? peak_pci_remove+0x16f/0x270 [peak_pci]\n[   35.967945 ]  __asan_report_load8_noabort+0x14/0x20\n[   35.968346 ]  peak_pci_remove+0x16f/0x270 [peak_pci]\n[   35.968752 ]  pci_device_remove+0xa9/0x250",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "e6d9c80b7ca1504411ad6d7acdb8683e4ae1c9cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1c616528ba4aeb1125a06b407572ab7b56acae38"
            },
            {
              "version": "e6d9c80b7ca1504411ad6d7acdb8683e4ae1c9cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "447d44cd2f67a20b596ede3ca3cd67086dfd9ca9"
            },
            {
              "version": "e6d9c80b7ca1504411ad6d7acdb8683e4ae1c9cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "34914971bb3244db4ce2be44e9438a9b30c56250"
            },
            {
              "version": "e6d9c80b7ca1504411ad6d7acdb8683e4ae1c9cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "adbda14730aacce41c0d3596415aa39ad63eafd9"
            },
            {
              "version": "e6d9c80b7ca1504411ad6d7acdb8683e4ae1c9cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1248582e47a9f7ce0ecd156c39fc61f8b6aa3699"
            },
            {
              "version": "e6d9c80b7ca1504411ad6d7acdb8683e4ae1c9cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "28f28e4bc3a5e0051faa963f10b778ab38c1db69"
            },
            {
              "version": "e6d9c80b7ca1504411ad6d7acdb8683e4ae1c9cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0e5afdc2315b0737edcf55bede4ee1640d2d464d"
            },
            {
              "version": "e6d9c80b7ca1504411ad6d7acdb8683e4ae1c9cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "949fe9b35570361bc6ee2652f89a0561b26eec98"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.4",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.4"
            },
            {
              "version": "4.4.290",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.4.*"
            },
            {
              "version": "4.9.288",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "version": "4.14.253",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.214",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.156",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.76",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.14.15",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.14.*"
            },
            {
              "version": "5.15",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}