CVE-2025-21868

A flaw was found in the Linux kernel's network buffer allocation. When the kernel is built with specific configurations for network packet fragmentation, it can lead to a kernel warning or 'splat' due to incorrect handling of small head cache usage. A local attacker could potentially exploit this to cause a Denial of Service (DoS) by triggering the kernel to enter an unstable state.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.