SB2022031523 - Denial of service in Linux kernel ICMPv6
Published: March 15, 2022
Security Bulletin ID
SB2022031523
Severity
High
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 security vulnerability.
1) Memory leak (CVE-ID: CVE-2022-0742)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak within igmp6_event_query() and igmp6_event_report() functions in Linux kernel when handling ICMPv6 packets. A remote attacker can flood the system with ICMPv6 messages of type 130 and 131 to cause out-of-memory condition and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.