SB2025031274 - Memory leak in Linux kernel net
Published: March 12, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025031274
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-2025-21864)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the tcp_add_backlog() function in net/ipv4/tcp_ipv4.c, within the tcp_ofo_queue(), tcp_queue_rcv(), tcp_data_queue() and tcp_rcv_established() functions in net/ipv4/tcp_input.c, within the tcp_fastopen_add_skb() function in net/ipv4/tcp_fastopen.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/69cafd9413084cd5012cf5d7c7ec6f3d493726d9
- https://git.kernel.org/stable/c/87858bbf21da239ace300d61dd209907995c0491
- https://git.kernel.org/stable/c/9b6412e6979f6f9e0632075f8f008937b5cd4efd
- https://git.kernel.org/stable/c/cd34a07f744451e2ecf9005bb7d24d0b2fb83656
- https://git.kernel.org/stable/c/f1d5e6a5e468308af7759cf5276779d3155c5e98
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.80