{"api_version":"1","generated_at":"2026-06-24T16:35:26+00:00","cve":"CVE-2026-52912","urls":{"html":"https://cve.report/CVE-2026-52912","api":"https://cve.report/api/cve/CVE-2026-52912.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-52912","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-52912"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 08:16:20","updated_at":"2026-06-24 08:16:20"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/3fb0f5c0f64162a8c3f25616a4f1e340b921737f","name":"https://git.kernel.org/stable/c/3fb0f5c0f64162a8c3f25616a4f1e340b921737f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a698ac8ab2561cf575d2d9f34095032651dd952e","name":"https://git.kernel.org/stable/c/a698ac8ab2561cf575d2d9f34095032651dd952e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/950d809f154dca04e5fbe5d3c8b9c5e44769cd57","name":"https://git.kernel.org/stable/c/950d809f154dca04e5fbe5d3c8b9c5e44769cd57","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1e5e20031c5eee8d2e490a90ff4d6a2feecfc3be","name":"https://git.kernel.org/stable/c/1e5e20031c5eee8d2e490a90ff4d6a2feecfc3be","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e196115ec330a18de415bdb9f5071aa9f08e53ce","name":"https://git.kernel.org/stable/c/e196115ec330a18de415bdb9f5071aa9f08e53ce","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3823c27099cfe2482299065814adbaa771be9644","name":"https://git.kernel.org/stable/c/3823c27099cfe2482299065814adbaa771be9644","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/15d464265120ab9818bd673af301deee09bedab2","name":"https://git.kernel.org/stable/c/15d464265120ab9818bd673af301deee09bedab2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/19924bdd8a45ebc72a7b84c57fd63057d1dc75ac","name":"https://git.kernel.org/stable/c/19924bdd8a45ebc72a7b84c57fd63057d1dc75ac","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-52912","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52912","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ac28634456867b23b95faccba7997a62ec430603 950d809f154dca04e5fbe5d3c8b9c5e44769cd57 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ac28634456867b23b95faccba7997a62ec430603 a698ac8ab2561cf575d2d9f34095032651dd952e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ac28634456867b23b95faccba7997a62ec430603 19924bdd8a45ebc72a7b84c57fd63057d1dc75ac git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ac28634456867b23b95faccba7997a62ec430603 1e5e20031c5eee8d2e490a90ff4d6a2feecfc3be git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.209 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.175 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.142 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.92 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/net/netfilter/nf_queue.h","net/netfilter/nf_queue.c","net/netfilter/nfnetlink_queue.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"950d809f154dca04e5fbe5d3c8b9c5e44769cd57","status":"affected","version":"ac28634456867b23b95faccba7997a62ec430603","versionType":"git"},{"lessThan":"a698ac8ab2561cf575d2d9f34095032651dd952e","status":"affected","version":"ac28634456867b23b95faccba7997a62ec430603","versionType":"git"},{"lessThan":"19924bdd8a45ebc72a7b84c57fd63057d1dc75ac","status":"affected","version":"ac28634456867b23b95faccba7997a62ec430603","versionType":"git"},{"lessThan":"1e5e20031c5eee8d2e490a90ff4d6a2feecfc3be","status":"affected","version":"ac28634456867b23b95faccba7997a62ec430603","versionType":"git"},{"lessThan":"3823c27099cfe2482299065814adbaa771be9644","status":"affected","version":"ac28634456867b23b95faccba7997a62ec430603","versionType":"git"},{"lessThan":"15d464265120ab9818bd673af301deee09bedab2","status":"affected","version":"ac28634456867b23b95faccba7997a62ec430603","versionType":"git"},{"lessThan":"3fb0f5c0f64162a8c3f25616a4f1e340b921737f","status":"affected","version":"ac28634456867b23b95faccba7997a62ec430603","versionType":"git"},{"lessThan":"e196115ec330a18de415bdb9f5071aa9f08e53ce","status":"affected","version":"ac28634456867b23b95faccba7997a62ec430603","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["include/net/netfilter/nf_queue.h","net/netfilter/nf_queue.c","net/netfilter/nfnetlink_queue.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.7"},{"lessThan":"4.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.142","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.92","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.259","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.209","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.142","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"4.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-06-24T07:14:10.583Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/950d809f154dca04e5fbe5d3c8b9c5e44769cd57"},{"url":"https://git.kernel.org/stable/c/a698ac8ab2561cf575d2d9f34095032651dd952e"},{"url":"https://git.kernel.org/stable/c/19924bdd8a45ebc72a7b84c57fd63057d1dc75ac"},{"url":"https://git.kernel.org/stable/c/1e5e20031c5eee8d2e490a90ff4d6a2feecfc3be"},{"url":"https://git.kernel.org/stable/c/3823c27099cfe2482299065814adbaa771be9644"},{"url":"https://git.kernel.org/stable/c/15d464265120ab9818bd673af301deee09bedab2"},{"url":"https://git.kernel.org/stable/c/3fb0f5c0f64162a8c3f25616a4f1e340b921737f"},{"url":"https://git.kernel.org/stable/c/e196115ec330a18de415bdb9f5071aa9f08e53ce"}],"title":"netfilter: nf_queue: hold bridge skb->dev while queued","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-52912","datePublished":"2026-06-24T07:14:10.583Z","dateReserved":"2026-06-09T07:44:35.366Z","dateUpdated":"2026-06-24T07:14:10.583Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 08:16:20","lastModifiedDate":"2026-06-24 08:16:20","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"52912","Ordinal":"1","Title":"netfilter: nf_queue: hold bridge skb->dev while queued","CVE":"CVE-2026-52912","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"52912","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"netfilter: nf_queue: hold bridge skb->dev while queued"}]}}}