SB2020060984 - Integer overflow in Linux kernel
Published: June 9, 2020 Updated: July 6, 2022
Security Bulletin ID
SB2020060984
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Integer overflow (CVE-ID: CVE-2020-13974)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer overflow within drivers/tty/vt/keyboard.c if k_ascii is called several times in a row. A local user can trigger an integer overflow and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.