CVE-2022-40303: Integer Overflow or Wraparound

November 23, 2022 (updated November 7, 2023)

An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault.

References

gitlab.gnome.org/GNOME/libxml2/-/commit/c846986356fc149915a74972bf198abc266bc2c0
gitlab.gnome.org/GNOME/libxml2/-/tags/v2.10.3
nvd.nist.gov/vuln/detail/CVE-2022-40303

Code Behaviors & Features

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