archive_read_format_rar_read_data in archive_read_support_format_rar.c in libarchive before 3.4.0 has a use-after-free in a certain ARCHIVE_FAILED situation, related to Ppmd7_DecodeSymbol.
https://www.debian.org/security/2019/dsa-4557
https://usn.ubuntu.com/4169-1/
https://support.f5.com/csp/article/K52144175?utm_source=f5support&%3Butm_medium=RSS
https://security.gentoo.org/glsa/202003-28
https://seclists.org/bugtraq/2019/Nov/2
https://lists.debian.org/debian-lts-announce/2019/10/msg00034.html
https://github.com/libarchive/libarchive/compare/v3.3.3...v3.4.0
https://github.com/libarchive/libarchive/commit/b8592ecba2f9e451e1f5cb7ab6dcee8b8e7b3f60
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14689
https://access.redhat.com/errata/RHSA-2020:0271
https://access.redhat.com/errata/RHSA-2020:0246
https://access.redhat.com/errata/RHSA-2020:0203
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00015.html
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00012.html