CVE-2020-12829

low-risk
Published 2020-08-31

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.

Do I need to act?

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0.12% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.8/10 Low
LOCAL / LOW complexity

Affected Products (5)

Affected Vendors

Debian Canonical Qemu

References (6)

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1808510
Third Party Advisory https://usn.ubuntu.com/4467-1/
Third Party Advisory https://www.debian.org/security/2020/dsa-4760
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1808510
Third Party Advisory https://usn.ubuntu.com/4467-1/
Third Party Advisory https://www.debian.org/security/2020/dsa-4760
26
/ 100
low-risk
Severity 14/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 12/34 · Low