SB20230516114 - Side-channel attack in Linux kernel
Published: May 16, 2023
Security Bulletin ID
SB20230516114
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Processor optimization removal or modification of security-critical code (CVE-ID: CVE-2023-0459)
CWE-ID: CWE-1037 - Processor optimization removal or modification of security-critical code
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to improper implementation of speculative execution barriers in usercopy functions
in certain situations. A local user can gain access to sensitive information.
Remediation
Install update from vendor's website.