SB2024060116 - NULL pointer dereference in Linux kernel ipv4
Published: June 1, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024060116
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) NULL pointer dereference (CVE-ID: CVE-2021-46912)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the ipv4_sysctl_init_net() function in net/ipv4/sysctl_net_ipv4.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/35d7491e2f77ce480097cabcaf93ed409e916e12
- https://git.kernel.org/stable/c/1ccdf1bed140820240e383ba0accc474ffc7f006
- https://git.kernel.org/stable/c/97684f0970f6e112926de631fdd98d9693c7e5c1
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.32
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12