VULNERABILITY INTELLIGENCE

CVE-2021-3638

CVSS score6.5 MEDIUM
EPSS probability0.43%
CISA KEVNot currently listed
Published2022-03-03
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

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.

Weakness classification

  • secalert@redhat.com: CWE-787
  • nvd@nist.gov: CWE-787

Primary references