CVE-2026-68321

A flaw was found in the Linux kernel. A resource leak vulnerability exists in the txgbe network driver. This flaw occurs because Flow Director (FDIR) filters are not properly freed when the network interface is removed while it is in a down state. This can lead to a gradual consumption of system resources, potentially resulting in a Denial of Service (DoS) over time.

This issue affects Wangxun txgbe NICs. FDIR filters leak on driver remove when interface was down during unregister. Systems without txgbe hardware are not affected.

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.

To mitigate this issue, prevent the txgbe module from loading. See https://access.redhat.com/solutions/41278 for instructions.