osv-2021-777
Vulnerability from osv_ossfuzz
Published
2021-05-20 00:00
Modified
2025-10-17 14:10
Summary
Heap-use-after-free in xmlAddNextSibling
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34461

Crash type: Heap-use-after-free READ 4
Crash state:
xmlAddNextSibling
xmlXIncludeCopyRange
xmlXIncludeCopyXPointer
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "severity": "HIGH"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "libxml2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6c128fd58a0e4641c23a345d413672494622db1b"
            }
          ],
          "repo": "https://gitlab.gnome.org/GNOME/libxml2.git",
          "type": "GIT"
        }
      ],
      "versions": [
        "CVE-2021-3541",
        "v2.9.11",
        "v2.9.12",
        "v2.9.13",
        "v2.9.14",
        "v2.10.0",
        "v2.10.1",
        "v2.10.2",
        "v2.10.3",
        "v2.10.4",
        "v2.11.0",
        "v2.11.1",
        "v2.11.2",
        "v2.11.3",
        "v2.11.4",
        "v2.11.5",
        "v2.11.6",
        "v2.12.0",
        "v2.12.1",
        "v2.12.2",
        "v2.12.3",
        "v2.12.4",
        "v2.12.5",
        "v2.11.7",
        "v2.12.6",
        "v2.11.8",
        "v2.12.7",
        "v2.12.8",
        "v2.13.0",
        "v2.13.1",
        "v2.13.2",
        "v2.13.3",
        "v2.11.9",
        "v2.12.9",
        "v2.13.4",
        "v2.13.5",
        "v2.13.6",
        "v2.12.10",
        "v2.13.7",
        "v2.14.0",
        "v2.14.1",
        "v2.13.8",
        "v2.14.2",
        "v2.14.3",
        "v2.14.4",
        "v2.14.5",
        "v2.13.9",
        "v2.14.6",
        "v2.15.0",
        "v2.15.1"
      ]
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34461\n\n```\nCrash type: Heap-use-after-free READ 4\nCrash state:\nxmlAddNextSibling\nxmlXIncludeCopyRange\nxmlXIncludeCopyXPointer\n```\n",
  "id": "OSV-2021-777",
  "modified": "2025-10-17T14:10:52.851254Z",
  "published": "2021-05-20T00:00:30.166614Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34461"
    }
  ],
  "summary": "Heap-use-after-free in xmlAddNextSibling"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.