SB2024070231 - Denial of service in Linux kernel IPv6
Published: July 2, 2024 Updated: July 2, 2024
Security Bulletin ID
SB2024070231
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource management error (CVE-ID: CVE-2021-47109)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources within the system when handling NUD_NOARP entries for IPv6. A remote attacker can fill up the neighbour table with enough entries that it will overflow for valid connections after that.
Remediation
Install update from vendor's website.