SB2025100535 - Improper locking in Linux kernel netfilter ipset
Published: October 5, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100535
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 locking (CVE-ID: CVE-2023-53549)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the hash_netport4_uadt() function in net/netfilter/ipset/ip_set_hash_netport.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/24a828f5a54bdeca0846526860d72b3766c5fe95
- https://git.kernel.org/stable/c/5e29dc36bd5e2166b834ceb19990d9e68a734d7d
- https://git.kernel.org/stable/c/8964cc36ba011dc0e1041131fa2e91fb4c2a811b
- https://git.kernel.org/stable/c/a1e1521b463968b4eca7163f61fb6cc54d008061
- https://git.kernel.org/stable/c/ee756980e491c829ba0495bb420b7224a9ee26b2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.163