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CVE-2021-3638

MEDIUM CVSS: 6.5 Published: 2022-03-03 Modified: 2026-06-17

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.

Affected Platforms

Qemu QemuFedoraproject Fedora

Weakness Type

CWE-787, CWE-787

References