Perl before 5.26.3 and 5.28.0 before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.
www.securityfocus.com/bid/106179
www.securitytracker.com/id/1042181
access.redhat.com/errata/RHSA-2019:0001
access.redhat.com/errata/RHSA-2019:0010
bugzilla.redhat.com/show_bug.cgi?id=1646734
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWQGEB543QN7SSBRKYJM6PSOC3RLYGSM/
metacpan.org/changes/release/SHAY/perl-5.26.3
metacpan.org/changes/release/SHAY/perl-5.28.1
rt.perl.org/Public/Bug/Display.html?id=133423
security.gentoo.org/glsa/201909-01
security.netapp.com/advisory/ntap-20190221-0003/
usn.ubuntu.com/3834-1/
www.debian.org/security/2018/dsa-4347
www.oracle.com/security-alerts/cpujul2020.html