regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.
https://github.com/Perl/perl5/compare/v5.30.2...v5.30.3
https://github.com/Perl/perl5/blob/blead/pod/perl5303delta.pod
https://github.com/Perl/perl5/issues/16947
https://github.com/perl/perl5/commit/66bbb51b93253a3f87d11c2695cfb7bdb782184a
https://github.com/Perl/perl5/issues/17743
https://security.netapp.com/advisory/ntap-20200611-0001/
https://security.gentoo.org/glsa/202006-03
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00044.html
https://www.oracle.com/security-alerts/cpuoct2020.html
https://www.oracle.com/security-alerts/cpujan2021.html
https://www.oracle.com/security-alerts/cpuApr2021.html
https://www.oracle.com//security-alerts/cpujul2021.html
https://www.oracle.com/security-alerts/cpuoct2021.html
Source: MITRE
Published: 2020-06-05
Updated: 2022-05-12
Type: CWE-120
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 7.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH