Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2026-8829: HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities. The XS routine backing HTML::Entities::_decode_entities cached a pointer (repl) into the entity-value SV returned by hv_fetch on the entity2char hash. When the input SV was identical to a value SV in that hash, and that value contained its own key as an entity reference, a later call to grow_gap() reallocated the SV's PV buffer and freed the backing allocation that repl still pointed into. The subsequent copy loop read repl_len bytes from the freed allocation. The read may disclose adjacent heap contents into the destination SV.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | perl-HTML-Parser | 0:3.71-4.amzn2.0.3 |
| Amazon Linux · 2 | perl-HTML-Parser-debuginfo | 0:3.71-4.amzn2.0.3 |
Vulnerabilities 1
-
High 7.5
HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities
HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities. The XS routine backing HTML::Entities::_decode_entities cached a pointer (repl) into the entity-value SV returned by hv_fetch on the entity2char hash. When the input SV w…
References
-
web
https://alas.aws.amazon.com/cve/html/CVE-2026-8829.html