CVE-2024-26808

A vulnerability was found in the Linux kernel's netfilter subsystem, related to the nft_chain_filter feature. This issue occurs when a NETDEV_UNREGISTER event is reported, which can leave a stale reference to a network device in the ingress basechain. If this issue is not addressed, this stale reference could result in lingering issues with network device handling.

The vulnerability has been fixed by ensuring that network devices are correctly removed from the basechain when these events occur. It affects multiple Linux kernel versions and is rated as a medium-severity issue with a CVSS v3 base score of 5.5, indicating it could lead to a denial of service under certain conditions.

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.