CVE-2026-23083

kernel: fou: Don't allow 0 for FOU_ATTR_IPPROTO

Loading…

Severity

Unknown

Red Hat Product Security

—

Review impact separately from score.

Updated · June 28, 2026

In the Linux kernel, the following vulnerability has been resolved:

fou: Don't allow 0 for FOU_ATTR_IPPROTO.

fou_udp_recv() has the same problem mentioned in the previous patch.

If FOU_ATTR_IPPROTO is set to 0, skb is not freed by fou_udp_recv() nor "resubmit"-ted in ip_protocol_deliver_rcu().

Let's forbid 0 for FOU_ATTR_IPPROTO.

No mitigation is specified in collected source.

CWE not specified