Triggerable assertion due to race condition in hot-unplug
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.6epss 0.3%
exploitation probability
0.3%top 82% of all CVEs
observed exploitation
nono source reports it
A flaw was found in QEMU. The async nature of hot-unplug enables a race scenario where the net device backend is cleared before the virtio-net pci frontend has been unplugged. A malicious guest could use this time window to trigger an assertion and cause a denial of service.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
Affected products
Fedora · Extra Packages for Enterprise LinuxFedora · Fedoran/a · qemuRed Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 8 Advanced VirtualizationRed Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat OpenStack Platform 13 (Queens)