SB2025090452 - Memory leak in Linux kernel netfilter
Published: September 4, 2025
Security Bulletin ID
SB2025090452
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) Memory leak (CVE-ID: CVE-2025-38721)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the ctnetlink_done(), ctnetlink_get_id(), NFNL_MSG_TYPE() and local_bh_enable() functions in net/netfilter/nf_conntrack_netlink.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/19b909a4b1452fb97e477d2f08b97f8d04095619
- https://git.kernel.org/stable/c/30cf811058552b8cd0e98dff677ef3f89d6d34ce
- https://git.kernel.org/stable/c/41462f4cfc583513833f87f9ee55d12da651a7e3
- https://git.kernel.org/stable/c/586892e341fbf698e7cbaca293e1353957db725a
- https://git.kernel.org/stable/c/962518c6ca9f9a13df099cafa429f72f68ad61f0
- https://git.kernel.org/stable/c/a2cb4df7872de069f809de2f076ec8e54d649fe3
- https://git.kernel.org/stable/c/a62d6aa3f31f216b637a4c71b7a8bfc7c57f049b
- https://git.kernel.org/stable/c/de788b2e6227462b6dcd0e07474e72c089008f74
- https://git.kernel.org/stable/c/e14f72aa66c029db106921d621edcedef68e065b