Detections
Analytics
CVE-2026-74625
medium
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: release template ct on non-IP path A bridge nftables ct zone set rule can attach a conntrack template to an skb before nf_ct_bridge_pre() sees it. For non-IPv4 and non-IPv6 EtherTypes, nf_ct_bridge_pre() currently overwrites skb->_nfct with IP_CT_UNTRACKED without releasing the existing template reference. That makes the per-cpu template, and any temporary templates allocated for concurrent use, unreachable and leaks memory until the host runs out of slab. Reset the skb conntrack state before marking the frame untracked so the existing template reference is dropped on the non-IP path.
References
https://git.kernel.org/stable/c/fc90df37540627d092af770215fb4b7befe9409b
https://git.kernel.org/stable/c/daa6e070f8e1e7a4dddec8b64ca37663f8cda917
https://git.kernel.org/stable/c/d45cc8020d7c0a9f01dee42ff5c40bc14c9af72f
https://git.kernel.org/stable/c/c58d34fe8b7e47bb0b350a7625023b1261342be5
https://git.kernel.org/stable/c/bd7b16494dacf87e9336a1dcfdada83b9e40edd6
https://git.kernel.org/stable/c/7cff440d702616022769f2643168d7f9820547a0
https://git.kernel.org/stable/c/6ea88401e10e04e0b3bb7a7adea54932fb60b93b
https://git.kernel.org/stable/c/46d559f00b1ab1d114f92d2f16c5ef0093b3b9dd