There is an illegal address access at ext/testcase.c in libsolv.a in libsolv through 0.7.2 that will cause a denial of service. NOTE: third parties dispute this issue stating that the issue affects the test suite and not the underlying library. It cannot be exploited in any real-world application
https://usn.ubuntu.com/3916-1/
https://github.com/openSUSE/libsolv/pull/291
https://bugzilla.suse.com/show_bug.cgi?id=1120631
https://bugzilla.redhat.com/show_bug.cgi?id=1652604
https://access.redhat.com/errata/RHSA-2019:3583
https://access.redhat.com/errata/RHSA-2019:2290
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00057.html