nvd-json-data-feeds/CVE-2022/CVE-2022-494xx/CVE-2022-49464.json

{
  "id": "CVE-2022-49464",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-02-26T07:01:22.697",
  "lastModified": "2025-02-27T19:15:44.470",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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``."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: erofs: arregla el desbordamiento de copia de b\u00fafer de la funci\u00f3n ztailpacking Recib\u00ed un informe de KASAN como el siguiente: [ 46.959738] ======================================================================== [ 46.960430] ERROR: KASAN: use-after-free in z_erofs_shifted_transform+0x2bd/0x370 [ 46.960430] Read of size 4074 at addr ffff8880300c2f8e by task fssum/188 ... [ 46.960430] Call Trace: [ 46.960430]  [ 46.960430] dump_stack_lvl+0x41/0x5e [ 46.960430] print_report.cold+0xb2/0x6b7 [ 46.960430] ? z_erofs_shifted_transform+0x2bd/0x370 [ 46.960430] kasan_report+0x8a/0x140 [ 46.960430] ? z_erofs_shifted_transform+0x2bd/0x370 [ 46.960430] kasan_check_range+0x14d/0x1d0 [ 46.960430] memcpy+0x20/0x60 [ 46.960430] z_erofs_shifted_transform+0x2bd/0x370 [ 46.960430] z_erofs_decompress_pcluster+0xaae/0x1080 La causa ra\u00edz es que el pcluster de cola ya no ser\u00e1 un bloque de sistema de archivos completo. Por lo tanto, si se utiliza ztailpacking, la segunda parte de un pcluster de cola sin comprimir puede no ser ``rq-&gt;pageofs_out``."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4d53a625f29074e7b8236c2c0e0922edb7608df9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6b59e1907f58cf877c563dcf013159eb9f994b64",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dcbe6803fffd387f72b48c2373b5f5ed12a5804b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}