CVE-2026-74625
N/AIn 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.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
—EPSS not yet scored
Impact if exploited
—CVSS · not scored
- No impact metrics
Proof of concept & exploit code
- github-search Search GitHub for public PoC repos
Test against your own equipment
curl -s https://vulnpedia.com/cve/CVE-2026-74625/poc.jsonMachine-readable PoC index for this CVE (for automation).Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-74625/poc.json
References
Technical & other
- https://git.kernel.org/stable/c/fc90df37540627d092af770215fb4b7befe9409b
- https://git.kernel.org/stable/c/daa6e070f8e1e7a4dddec8b64ca37663f8cda917
- https://git.kernel.org/stable/c/bd7b16494dacf87e9336a1dcfdada83b9e40edd6
- https://git.kernel.org/stable/c/6ea88401e10e04e0b3bb7a7adea54932fb60b93b
- https://git.kernel.org/stable/c/46d559f00b1ab1d114f92d2f16c5ef0093b3b9dd
- https://git.kernel.org/stable/c/c58d34fe8b7e47bb0b350a7625023b1261342be5
- https://git.kernel.org/stable/c/7cff440d702616022769f2643168d7f9820547a0
- https://git.kernel.org/stable/c/d45cc8020d7c0a9f01dee42ff5c40bc14c9af72f