Perl is vulnerable to denial of service (DoS). It allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.
lists.opensuse.org/opensuse-security-announce/2020-06/msg00044.html
github.com/Perl/perl5/blob/blead/pod/perl5303delta.pod
github.com/perl/perl5/commit/897d1f7fd515b828e4b198d8b8bef76c6faf03ed
github.com/Perl/perl5/compare/v5.30.2...v5.30.3
lists.fedoraproject.org/archives/list/[email protected]/message/IN3TTBO5KSGWE5IRIKDJ5JSQRH7ANNXE/
security.gentoo.org/glsa/202006-03
security.netapp.com/advisory/ntap-20200611-0001/
www.oracle.com//security-alerts/cpujul2021.html
www.oracle.com/security-alerts/cpuApr2021.html
www.oracle.com/security-alerts/cpuapr2022.html
www.oracle.com/security-alerts/cpujan2021.html
www.oracle.com/security-alerts/cpujan2022.html
www.oracle.com/security-alerts/cpuoct2020.html
www.oracle.com/security-alerts/cpuoct2021.html