CVE-2023-3301: Triggerable assertion due to race condition in hot-unplug

Severity: medium (CVSS 5.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-09-13 · updated 2026-06-17
Weakness: CWE-617

Description

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.

Affected products

QEMU: through 8.0.3
Red Hat Enterprise Linux: 8.0, 9.0

References

https://access.redhat.com/security/cve/CVE-2023-3301
https://bugzilla.redhat.com/show_bug.cgi?id=2215784
https://security.netapp.com/advisory/ntap-20231020-0008/
https://access.redhat.com/security/cve/CVE-2023-3301
https://bugzilla.redhat.com/show_bug.cgi?id=2215784
https://security.netapp.com/advisory/ntap-20231020-0008/

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