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CVE-2020-13974

nvd nist
Published: Jun 9, 2020Modified: Jun 17, 2026

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: NVD

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.

Affected (12)

Linux
1 product
Linux Kernel
Debian
1 product
Debian Linux
Canonical
1 product
Ubuntu Linux
Configuration A
7 vulnerable
Vulnerable SoftwareAffected Versions
Linux
Linux Kernel
version < 4.4.227
Linux Kernel
4.10 ≤ version < 4.14.184
Linux Kernel
4.15 ≤ version < 4.19.128
Linux Kernel
4.20 ≤ version < 5.4.46
Linux Kernel
4.5 ≤ version < 4.9.227
Linux Kernel
5.5 ≤ version < 5.6.18
Linux Kernel
5.7 ≤ version < 5.7.2
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Debian Linux
Version 9.0
Configuration C
4 vulnerable
Vulnerable SoftwareAffected Versions
Canonical
Ubuntu Linux
Version 14.04
Ubuntu Linux
Version 16.04
Ubuntu Linux
Version 18.04
Ubuntu Linux
Version 20.04

Related CWEs

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.

References (24)

Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: cve@mitre.org
Vendor Advisory
Source: cve@mitre.org
PatchVendor Advisory
Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: cve@mitre.org
ExploitVendor Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.