{
  "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-2022-49464",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-49464",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-02-26T02:13:10.321Z",
    "updatedAt": "2026-08-05T08:55:16.048Z",
    "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": "erofs: fix buffer copy overflow of ztailpacking feature",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix buffer copy overflow of ztailpacking feature\n\nI got some KASAN report as below:\n\n[   46.959738] ==================================================================\n[   46.960430] BUG: KASAN: use-after-free in z_erofs_shifted_transform+0x2bd/0x370\n[   46.960430] Read of size 4074 at addr ffff8880300c2f8e by task fssum/188\n...\n[   46.960430] Call Trace:\n[   46.960430]  <TASK>\n[   46.960430]  dump_stack_lvl+0x41/0x5e\n[   46.960430]  print_report.cold+0xb2/0x6b7\n[   46.960430]  ? z_erofs_shifted_transform+0x2bd/0x370\n[   46.960430]  kasan_report+0x8a/0x140\n[   46.960430]  ? z_erofs_shifted_transform+0x2bd/0x370\n[   46.960430]  kasan_check_range+0x14d/0x1d0\n[   46.960430]  memcpy+0x20/0x60\n[   46.960430]  z_erofs_shifted_transform+0x2bd/0x370\n[   46.960430]  z_erofs_decompress_pcluster+0xaae/0x1080\n\nThe root cause is that the tail pcluster won't be a complete filesystem\nblock anymore. So if ztailpacking is used, the second part of an\nuncompressed tail pcluster may not be ``rq->pageofs_out``.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ab749badf9f41f32509cd103391b81ea7e684b76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4d53a625f29074e7b8236c2c0e0922edb7608df9"
            },
            {
              "version": "ab749badf9f41f32509cd103391b81ea7e684b76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6b59e1907f58cf877c563dcf013159eb9f994b64"
            },
            {
              "version": "ab749badf9f41f32509cd103391b81ea7e684b76",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dcbe6803fffd387f72b48c2373b5f5ed12a5804b"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.17",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.17"
            },
            {
              "version": "5.17.14",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.17.*"
            },
            {
              "version": "5.18.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.18.*"
            },
            {
              "version": "5.19",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}