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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (28.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Qemu
- Canonical Ubuntu Linux — versions 16.04, 18.04, 20.04
- Debian Linux — versions 10.0
Weakness classification (CWE)
References
- usn.ubuntu.com/4467-1/ (vendor-advisory, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- www.debian.org/security/2020/dsa-4760 (vendor-advisory, Third Party Advisory)
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.