CVE-2026-64572

A flaw was found in the Linux kernel's IPv4 forwarding information base (FIB) component. A local attacker with administrative network capabilities (CAP_NET_ADMIN) could exploit a timing issue during route insertion and lookup operations. This could lead to a "use-after-free" vulnerability, where the system attempts to access memory that has already been released. The most important consequence is a denial of service, potentially causing system instability or crashes.

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.