SB20251001192 - Input validation error in Linux kernel netfilter
Published: October 1, 2025 Updated: October 27, 2025
Security Bulletin ID
SB20251001192
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) Input validation error (CVE-ID: CVE-2023-53492)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the nf_tables_updchain(), nft_chain_lookup_byid(), nf_tables_newrule() and nft_verdict_init() 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/041e2ac88caef286b39064e83e825e3f53113d36
- https://git.kernel.org/stable/c/4ae2e501331aaa506eaf760339bb2f43e5769395
- https://git.kernel.org/stable/c/515ad530795c118f012539ed76d02bacfd426d89
- https://git.kernel.org/stable/c/5e5e967e8505fbdabfb6497367ec1b808cadc356
- https://git.kernel.org/stable/c/fc95c8b02c6160936f1f3d8d9d7f4f66f3c84b49
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.39