archive_read_support_format_rar5.c in libarchive before 3.4.2 attempts to unpack a RAR5 file with an invalid or corrupted header (such as a header size of zero), leading to a SIGSEGV or possibly unspecified other impact.
bugs.chromium.org/p/oss-fuzz/issues/detail?id=20459
github.com/libarchive/libarchive/pull/1326
github.com/libarchive/libarchive/pull/1326/commits/94821008d6eea81e315c5881cdf739202961040a
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6OTE7GWASH2ZOVG5H3HEN5PR6B3KF7JB/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J76F7VU7HC3GBKG5SAKTRBOFOI3RGO6M/
security.gentoo.org/glsa/202003-28
usn.ubuntu.com/4293-1/