SB2020090230 - Ubuntu update for linux-aws-5.3
Published: September 2, 2020 Updated: April 23, 2025
Security Bulletin ID
SB2020090230
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2020-14356)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a NULL pointer dereference error in the Linux kernel cgroupv2 subsystem during system reboot. A local user can crash the system or execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.