CVE-2020-12829

Advisory lineage Upstream: 0 Downstream: 14
Modified
Published: 31 Aug 2020, 14:41
Last modified:04 Aug 2024, 12:04

Vulnerability Summary

Overall Risk (default)
low
15/100
CVSS Score
3.8 LOW
v3.1 (nvd)
EPSS Score
0.12% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

31 Aug 2020, 14:41
Published
Vulnerability first disclosed
04 Aug 2024, 12:04
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•LOW•Score: 3.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
  • v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 0.12%• Percentile: 30%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected Systems

  • canonical•ubuntu_linux

    16.04 | 18.04 | 20.04

  • debian•debian_linux

    10.0

  • qemu•qemu

    ≤ 5.0.1

References (3)