BZ2_decompress in decompress.c in bzip2 through 1.0.6 has an out-of-bounds write when there are many selectors.
https://www.oracle.com/security-alerts/cpuoct2020.html
https://usn.ubuntu.com/4146-2/
https://usn.ubuntu.com/4146-1/
https://usn.ubuntu.com/4038-2/
https://usn.ubuntu.com/4038-1/
https://support.f5.com/csp/article/K68713584?utm_source=f5support&%3Butm_medium=RSS
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:18.bzip2.asc
https://seclists.org/bugtraq/2019/Jul/22
https://seclists.org/bugtraq/2019/Aug/4
https://lists.debian.org/debian-lts-announce/2019/10/msg00018.html
https://lists.debian.org/debian-lts-announce/2019/10/msg00012.html
https://lists.debian.org/debian-lts-announce/2019/07/msg00014.html
https://lists.debian.org/debian-lts-announce/2019/06/msg00021.html
https://gitlab.com/federicomenaquintero/bzip2/commit/74de1e2e6ffc9d51ef9824db71a8ffee5962cdbc
http://packetstormsecurity.com/files/153957/FreeBSD-Security-Advisory-FreeBSD-SA-19-18.bzip2.html
http://packetstormsecurity.com/files/153644/Slackware-Security-Advisory-bzip2-Updates.html
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00078.html
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00050.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00040.html