Unrated severityNVD Advisory· Published Aug 26, 2022· Updated Feb 28, 2025
CVE-2021-3735
CVE-2021-3735
Description
A deadlock issue was found in the AHCI controller device of QEMU. It occurs on a software reset (ahci_reset_port) while handling a host-to-device Register FIS (Frame Information Structure) packet from the guest. A privileged user inside the guest could use this flaw to hang the QEMU process on the host, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.
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Affected products
2Patches
Vulnerability mechanics
References
3- access.redhat.com/security/cve/CVE-2021-3735mitrex_refsource_MISC
- bugzilla.redhat.com/show_bug.cgimitrex_refsource_MISC
- security-tracker.debian.org/tracker/CVE-2021-3735mitrex_refsource_MISC
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