SB2023061961 - Type confusion in Linux kernel
Published: June 19, 2023
Security Bulletin ID
SB2023061961
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Type confusion (CVE-ID: CVE-2023-3022)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
A flaw was found in the IPv6 module of the Linux kernel. The arg.result was not used consistently in fib6_rule_lookup, sometimes holding rt6_info and other times fib6_info. This was not accounted for in other parts of the code where rt6_info was expected unconditionally, potentially leading to a kernel panic in fib6_rule_suppress.
Remediation
Install update from vendor's website.