{"id":"CVE-2026-52912","revision":"8754772d0b0f4440b8ac80936e278d4e","records":[{"revision":"8754772d0b0f4440b8ac80936e278d4e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-52912","aliases":[],"title":"netfilter: nf_queue: hold bridge skb->dev while queued","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_queue: hold bridge skb->dev while queued\n\nbr_pass_frame_up() rewrites skb->dev from the ingress port to the bridge\nmaster before queueing bridge LOCAL_IN packets. NFQUEUE only holds\nreferences on state.in/out and bridge physdevs, so a queued bridge\npacket can retain a freed bridge master in skb->dev until reinjection.\n\nWhen the verdict is reinjected later, br_netif_receive_skb() re-enters\nthe receive path with skb->dev still pointing at the freed bridge master,\ntriggering a use-after-free.\n\nStore skb->dev in the queue entry, hold a reference on it for the queue\nlifetime, and use the saved device when dropping queued packets during\nNETDEV_DOWN handling.","state":0,"publishedAt":"2026-06-24T07:14:10.583+00:00","modifiedAt":"2026-10-19T19:36:59.798+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                        \"include/net/netfilter/nf_queue.h\",\n                        \"net/netfilter/nf_queue.c\",\n                        \"net/netfilter/nfnetlink_queue.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"ac28634456867b23b95faccba7997a62ec430603\",\n                            \"lessThan\": \"950d809f154dca04e5fbe5d3c8b9c5e44769cd57\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac28634456867b23b95faccba7997a62ec430603\",\n                            \"lessThan\": \"a698ac8ab2561cf575d2d9f34095032651dd952e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac28634456867b23b95faccba7997a62ec430603\",\n                            \"lessThan\": \"19924bdd8a45ebc72a7b84c57fd63057d1dc75ac\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac28634456867b23b95faccba7997a62ec430603\",\n                            \"lessThan\": \"1e5e20031c5eee8d2e490a90ff4d6a2feecfc3be\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac28634456867b23b95faccba7997a62ec430603\",\n                            \"lessThan\": \"3823c27099cfe2482299065814adbaa771be9644\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac28634456867b23b95faccba7997a62ec430603\",\n                            \"lessThan\": \"15d464265120ab9818bd673af301deee09bedab2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac28634456867b23b95faccba7997a62ec430603\",\n                            \"lessThan\": \"3fb0f5c0f64162a8c3f25616a4f1e340b921737f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac28634456867b23b95faccba7997a62ec430603\",\n                            \"lessThan\": \"e196115ec330a18de415bdb9f5071aa9f08e53ce\",\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                        \"include/net/netfilter/nf_queue.h\",\n                        \"net/netfilter/nf_queue.c\",\n                        \"net/netfilter/nfnetlink_queue.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.259\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.209\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.175\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.142\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.92\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.34\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.11\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/950d809f154dca04e5fbe5d3c8b9c5e44769cd57","https://git.kernel.org/stable/c/a698ac8ab2561cf575d2d9f34095032651dd952e","https://git.kernel.org/stable/c/19924bdd8a45ebc72a7b84c57fd63057d1dc75ac","https://git.kernel.org/stable/c/1e5e20031c5eee8d2e490a90ff4d6a2feecfc3be","https://git.kernel.org/stable/c/3823c27099cfe2482299065814adbaa771be9644","https://git.kernel.org/stable/c/15d464265120ab9818bd673af301deee09bedab2","https://git.kernel.org/stable/c/3fb0f5c0f64162a8c3f25616a4f1e340b921737f","https://git.kernel.org/stable/c/e196115ec330a18de415bdb9f5071aa9f08e53ce"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-52912","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-52912","identifiers":["CVE-2026-52912"]},"retained":false,"historicalAffected":[]}],"coverage":[]}