Integer overflow in Qemu
CVE-2020-12829
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.
Vulnerability class: Integer Overflow
EPSS: 0.004 (29.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L.
Affected products
- Qemu
- Canonical Ubuntu_linux — versions 16.04, 18.04, 20.04
- Debian Debian_linux — versions 10.0
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
Frequently asked questions
- What is CVE-2020-12829?
- CVE-2020-12829 is a low-severity vulnerability in Qemu, classified under Integer Overflow or Wraparound. CVSS score: 3.8/10. Published 2020-08-31.
- How severe is CVE-2020-12829?
- Low severity. CVSS v3 base score is 3.8 out of 10.