CVE-2021-3638
Medium
Description
An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Qemu
PublishedMar 3, 2022
First seenMar 3, 2022
Weakness typeCWE-787Out-of-bounds write
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| qemu qemu | 4.0.0 ≤ v ≤ 6.1.0 | — |
| fedoraproject fedora | 36, 37 | — |
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