{"id":"CVE-2026-74625","revision":"1024da2f93b54903b00e5880fbe73f6b","records":[{"revision":"1024da2f93b54903b00e5880fbe73f6b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74625","aliases":[],"title":"netfilter: bridge: release template ct on non-IP path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: bridge: release template ct on non-IP path\n\nA bridge nftables ct zone set rule can attach a conntrack template to\nan skb before nf_ct_bridge_pre() sees it. For non-IPv4 and non-IPv6\nEtherTypes, nf_ct_bridge_pre() currently overwrites skb->_nfct with\nIP_CT_UNTRACKED without releasing the existing template reference.\n\nThat makes the per-cpu template, and any temporary templates allocated\nfor concurrent use, unreachable and leaks memory until the host runs out\nof slab.\n\nReset the skb conntrack state before marking the frame untracked so the\nexisting template reference is dropped on the non-IP path.","state":0,"publishedAt":"2026-08-22T15:32:07.929+00:00","modifiedAt":"2026-10-16T19:06:03.037+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/bridge/netfilter/nf_conntrack_bridge.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3c171f496ef57774f8e5d509923372549734877f\",\n                            \"lessThan\": \"fc90df37540627d092af770215fb4b7befe9409b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c171f496ef57774f8e5d509923372549734877f\",\n                            \"lessThan\": \"daa6e070f8e1e7a4dddec8b64ca37663f8cda917\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c171f496ef57774f8e5d509923372549734877f\",\n                            \"lessThan\": \"bd7b16494dacf87e9336a1dcfdada83b9e40edd6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c171f496ef57774f8e5d509923372549734877f\",\n                            \"lessThan\": \"6ea88401e10e04e0b3bb7a7adea54932fb60b93b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c171f496ef57774f8e5d509923372549734877f\",\n                            \"lessThan\": \"46d559f00b1ab1d114f92d2f16c5ef0093b3b9dd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c171f496ef57774f8e5d509923372549734877f\",\n                            \"lessThan\": \"c58d34fe8b7e47bb0b350a7625023b1261342be5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c171f496ef57774f8e5d509923372549734877f\",\n                            \"lessThan\": \"7cff440d702616022769f2643168d7f9820547a0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c171f496ef57774f8e5d509923372549734877f\",\n                            \"lessThan\": \"d45cc8020d7c0a9f01dee42ff5c40bc14c9af72f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/bridge/netfilter/nf_conntrack_bridge.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.3\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.152\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.104\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.45\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.9\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74625","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74625","identifiers":["CVE-2026-74625"]},"retained":false,"historicalAffected":[]}],"coverage":[]}