A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit access control driver. Specifically, clients connecting to the read-write socket with limited ACL permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or potentially escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25637
Reference (s):
- https://bugzilla.redhat.com/show_bug.cgi?id=1881037
- URL: https://bugzilla.redhat.com/show_bug.cgi?id=1881037
- SUSE:openSUSE-SU-2020:1777
- URL: http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00073.html
- SUSE:openSUSE-SU-2020:1778