In QEMU through 5.0.0, an assertion failure can occur in the network packet processing. This issue affects the e1000e and vmxnet3 network devices. A malicious guest user/process could use this flaw to abort the QEMU process on the host, resulting in a denial of service condition in net_tx_pkt_add_raw_fragment in hw/net/net_tx_pkt.c.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-16092
• https://lists.debian.org/debian-lts-announce/2020/09/msg00013.html
• https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg07563.html
• https://security.netapp.com/advisory/ntap-20200821-0006/
• https://usn.ubuntu.com/4467-1/
• https://www.debian.org/security/2020/dsa-4760
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html
• http://www.openwall.com/lists/oss-security/2020/08/10/1
• https://security.gentoo.org/glsa/202208-27