CVE-2021-3638

 

Published at: - 04-03-2022 12:15

Last modified: - 19-01-2023 04:15

Total changes: - 7

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=1979858
• https://ubuntu.com/security/CVE-2021-3638
• https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg01682.html
• https://security.netapp.com/advisory/ntap-20220407-0003/
• FEDORA-2022-22b1f8dae2-
• FEDORA-2023-c8a60f6f80-

 

Keywords

NVD

 

CVE-2021-3638

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures