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CVE-2021-20257

Description

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.


Affected Software


CPE Name Name Version
qemu:qemu qemu 6.2.0
fedoraproject:fedora fedoraproject fedora 33
redhat:enterprise_linux redhat enterprise linux 6.0
redhat:enterprise_linux redhat enterprise linux 8.0
redhat:openstack_platform redhat openstack platform 13.0
redhat:openstack_platform redhat openstack platform 10.0
redhat:enterprise_linux_for_power_little_endian redhat enterprise linux for power little endian 8.0
redhat:enterprise_linux_for_ibm_z_systems redhat enterprise linux for ibm z systems 8.0
redhat:codeready_linux_builder redhat codeready linux builder -
debian:debian_linux debian debian linux 10.0

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