CVE-2021-3735
Medium
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.
SeverityMedium
CVSS4.4
Exploit probability—
Product
Qemu
PublishedAug 26, 2022
First seenAug 26, 2022
Weakness typeCWE-667CWE-667
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| qemu qemu | 6.1.0 | — |
| debian debian_linux | 10.0, 11.0 | — |
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