A flaw was found in DPDK version 19.11 and above that allows a malicious guest to cause a segmentation fault of the vhost-user backend application running on the host, which could result in a loss of connectivity for the other guests running on that host. This is caused by a missing validity check of the descriptor address in the function virtio_dev_rx_batch_packed().

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-10725
• https://bugs.dpdk.org/show_bug.cgi?id=270
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10725
• https://lists.fedoraproject.org/archives/list/[email protected]/message/HRHKFVV4MRWNNJOYQOVP64L4UVWYPEO4/
• https://www.openwall.com/lists/oss-security/2020/05/18/2
• https://www.oracle.com/security-alerts/cpujan2021.html
• http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00045.html