SB2025091651 - Memory leak in Linux kernel ipv6 netfilter
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091651
CSH 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 vulnerability.
1) Memory leak (CVE-ID: CVE-2023-53200)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the ip6t_register_table() function in net/ipv6/netfilter/ip6_tables.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/0af8c09c896810879387decfba8c942994bb61f5
- https://git.kernel.org/stable/c/3cc9610a87b7dde82f7360dd4eb6c2c27940ed57
- https://git.kernel.org/stable/c/512b6c4b83c91d007301ea7d7f095d16c3aceacd
- https://git.kernel.org/stable/c/e306dbee4c98025a9326386023a12ef4d887e9d1
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.100