CVE-2020-12829

low

Description

In QEMU through 5.0.0, an integer overflow was found in the SM501 display driver implementation. This flaw occurs in the COPY_AREA macro while handling MMIO write operations through the sm501_2d_engine_write() callback. A local attacker could abuse this flaw to crash the QEMU process in sm501_2d_operation() in hw/display/sm501.c on the host, resulting in a denial of service.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1808510

https://usn.ubuntu.com/4467-1/

https://www.debian.org/security/2020/dsa-4760

Details

Source: MITRE

Published: 2020-08-31

Updated: 2020-12-14

Type: CWE-190

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 3.8

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

Impact Score: 1.4

Exploitability Score: 2

Severity: LOW