CVE-2020-13974

Advisory lineage Upstream: 0 Downstream: 27
Modified
Published: 09 Jun 2020, 04:06
Last modified:04 Aug 2024, 12:32

Vulnerability Summary

Overall Risk (default)
medium
41/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.09% LOW
0% probability +0.04%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

09 Jun 2020, 04:06
Published
Vulnerability first disclosed
04 Aug 2024, 12:32
Last Modified
Vulnerability information updated

Description

An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/keyboard.c has an integer overflow if k_ascii is called several times in a row, aka CID-b86dab054059. NOTE: Members in the community argue that the integer overflow does not lead to a security issue in this case.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.09%• Percentile: 26%

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

    14.04 | 16.04 | 18.04 | 20.04

  • debian•debian_linux

    9.0

  • linux•linux_kernel

    < 4.4.227 | ≥ 4.5, < 4.9.227 | ≥ 4.10, < 4.14.184 | ≥ 4.15, < 4.19.128 | ≥ 4.20, < 5.4.46 | ≥ 5.5, < 5.6.18 | ≥ 5.7, < 5.7.2

References (12)