DEBIAN-CVE-2021-3638

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2021-3638
Downstream
DSA-4980-1
Published: 03 Mar 2022, 23:15
Last modified:28 Apr 2026, 20:22

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Mar 2022, 23:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:22
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Affected Systems

  • debian•qemu

    < 1:5.2+dfsg-11+deb11u1 | < 1:6.1+dfsg-6 | < 1:6.1+dfsg-6 | < 1:6.1+dfsg-6

References (1)