SB20240608256 - Improper Initialization in Linux kernel netfilter
Published: June 8, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240608256
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) Improper Initialization (CVE-ID: CVE-2021-46913)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper initialization within the nf_tables_set_elem_destroy(), nft_add_set_elem() and set->ops->remove() functions in net/netfilter/nf_tables_api.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/e51ff3ffc316377cca21de8b80404eed0c37b3c3
- https://git.kernel.org/stable/c/47d8de3c226574a3ddb8b87d0c152028d1bafef4
- https://git.kernel.org/stable/c/4d8f9065830e526c83199186c5f56a6514f457d2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.64
- 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