What’s Vulnerable › Vulnerabilities

CVE-2020-12829

• Severity: low (CVSS 3.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-08-31 · updated 2026-06-17
• Weakness: CWE-190

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.

Affected products

• Canonical Ubuntu Linux: 16.04, 18.04, 20.04
• Debian Linux: 10.0
• QEMU: through 5.0.1

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1808510
• https://usn.ubuntu.com/4467-1/
• https://www.debian.org/security/2020/dsa-4760
• https://bugzilla.redhat.com/show_bug.cgi?id=1808510
• https://usn.ubuntu.com/4467-1/
• https://www.debian.org/security/2020/dsa-4760

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