SB2025012062 - Buffer overflow in Linux kernel netfilter
Published: January 20, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025012062
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) Buffer overflow (CVE-ID: CVE-2025-21648)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the nf_ct_alloc_hashtable() function in net/netfilter/nf_conntrack_core.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/5552b4fd44be3393b930434a7845d8d95a2a3c33
- https://git.kernel.org/stable/c/b541ba7d1f5a5b7b3e2e22dc9e40e18a7d6dbc13
- https://git.kernel.org/stable/c/d5807dd1328bbc86e059c5de80d1bbee9d58ca3d
- https://git.kernel.org/stable/c/f559357d035877b9d0dcd273e0ff83e18e1d46aa
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.10