CVE-2022-40304: Improper Restriction of XML External Entity Reference

November 23, 2022 (updated November 7, 2023)

An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked.

References

gitlab.gnome.org/GNOME/libxml2/-/commit/1b41ec4e9433b05bb0376be4725804c54ef1d80b
gitlab.gnome.org/GNOME/libxml2/-/tags
gitlab.gnome.org/GNOME/libxml2/-/tags/v2.10.3
nvd.nist.gov/vuln/detail/CVE-2022-40304

Code Behaviors & Features

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