CVE-2026-53184

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Clear\nskb->dev so bpf_skc_lookup() falls back to sock_net(skb->sk), which\nskb_set_owner_sk_safe() set just above."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - The vulnerable code is reached on the IPv4/IPv6 UDP receive path when a packet is delivered to a UDP socket using sockmap verdict handling. In a reasonable deployment where such a socket is exposed by a service, a remote sender can trigger the path with UDP traffic.\nAC:L - There is no race or timing requirement; once the UDP socket has a SK_SKB sockmap verdict program that calls a socket-lookup helper, a received UDP packet reliably drives the stale skb->dev dereference. The required sockmap/verdict configuration is a deployment condition, not an attacker-controlled race.\nPR:N - A network attacker sending to an already configured UDP sockmap endpoint needs no local account or authentication. Creating the sockmap/BPF setup locally is privilege-gated by CAP_NET_ADMIN/CAP_BPF, but that is not required for the remote trigger scenario.\nUI:N - No victim user action is required after the affected service/socket is present. Packet receipt alone invokes the data-ready callback and verdict program.\nS:U - The impact remains within the kernel/network stack security authority. There is no VM escape, sandbox boundary crossing, or separate security scope involved.\nC:N - The bug misinterprets UDP dev_scratch metadata as a struct net_device pointer and faults during dev_net()/ifindex access. I found no usable information disclosure or attacker-controlled read primitive.\nI:N - The investigated path is an invalid pointer dereference, not a use-after-free or out-of-bounds write. I found no attacker-controlled write, data modification, or control-flow hijack primitive.\nA:H - The documented failure is a kernel general protection fault/oops in softirq. It is repeatable with UDP packets against the affected sockmap verdict configuration, causing high availability impact."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv4/udp.c"], "versions": [{"version": "965b57b469a589d64d81b1688b38dcb537011bb0", "lessThan": "263779a6beff03b8b06f6d25566cb0f45af361f2", "status": "affected", "versionType": "git"}, {"version": "965b57b469a589d64d81b1688b38dcb537011bb0", "lessThan": "1b585673a2249f13678e7ac443ac683ba767e0b6", "status": "affected", "versionType": "git"}, {"version": "965b57b469a589d64d81b1688b38dcb537011bb0", "lessThan": "90d35188aaa92b8f8b23f66335e0e91bf60103a3", "status": "affected", "versionType": "git"}, {"version": "965b57b469a589d64d81b1688b38dcb537011bb0", "lessThan": "6822eed69572000a181fa4e31fceacc60918c471", "status": "affected", "versionType": "git"}, {"version": "965b57b469a589d64d81b1688b38dcb537011bb0", "lessThan": "7d6d92d000ebe3a845a17c165c1d3a70c5d84fe1", "status": "affected", "versionType": "git"}, {"version": "965b57b469a589d64d81b1688b38dcb537011bb0", "lessThan": "3c94f241f776562c489876ff506f366224565c21", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv4/udp.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.94"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/263779a6beff03b8b06f6d25566cb0f45af361f2"}, {"url": "https://git.kernel.org/stable/c/1b585673a2249f13678e7ac443ac683ba767e0b6"}, {"url": "https://git.kernel.org/stable/c/90d35188aaa92b8f8b23f66335e0e91bf60103a3"}, {"url": "https://git.kernel.org/stable/c/6822eed69572000a181fa4e31fceacc60918c471"}, {"url": "https://git.kernel.org/stable/c/7d6d92d000ebe3a845a17c165c1d3a70c5d84fe1"}, {"url": "https://git.kernel.org/stable/c/3c94f241f776562c489876ff506f366224565c21"}], "title": "udp: clear skb->dev before running a sockmap verdict", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"x_adpType": "supplier", "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-10-15T01:22:37.019Z"}, "affected": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [{"status": "affected", "version": "0", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}], "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-53184", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T15:26:17.874900Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T19:57:26.714Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"affected": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [{"status": "affected", "version": "0", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}], "x_adpType": "supplier", "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}], "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-10-15T01:22:37.019Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-53184", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T15:26:17.874900Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T15:26:18.414Z"}}], "cna": {"title": "udp: clear skb->dev before running a sockmap verdict", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.5, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}, "scenarios": [{"lang": "en", "value": "AV:N - The vulnerable code is reached on the IPv4/IPv6 UDP receive path when a packet is delivered to a UDP socket using sockmap verdict handling. In a reasonable deployment where such a socket is exposed by a service, a remote sender can trigger the path with UDP traffic.\nAC:L - There is no race or timing requirement; once the UDP socket has a SK_SKB sockmap verdict program that calls a socket-lookup helper, a received UDP packet reliably drives the stale skb->dev dereference. The required sockmap/verdict configuration is a deployment condition, not an attacker-controlled race.\nPR:N - A network attacker sending to an already configured UDP sockmap endpoint needs no local account or authentication. Creating the sockmap/BPF setup locally is privilege-gated by CAP_NET_ADMIN/CAP_BPF, but that is not required for the remote trigger scenario.\nUI:N - No victim user action is required after the affected service/socket is present. Packet receipt alone invokes the data-ready callback and verdict program.\nS:U - The impact remains within the kernel/network stack security authority. There is no VM escape, sandbox boundary crossing, or separate security scope involved.\nC:N - The bug misinterprets UDP dev_scratch metadata as a struct net_device pointer and faults during dev_net()/ifindex access. I found no usable information disclosure or attacker-controlled read primitive.\nI:N - The investigated path is an invalid pointer dereference, not a use-after-free or out-of-bounds write. I found no attacker-controlled write, data modification, or control-flow hijack primitive.\nA:H - The documented failure is a kernel general protection fault/oops in softirq. It is repeatable with UDP packets against the affected sockmap verdict configuration, causing high availability impact."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "965b57b469a589d64d81b1688b38dcb537011bb0", "lessThan": "263779a6beff03b8b06f6d25566cb0f45af361f2", "versionType": "git"}, {"status": "affected", "version": "965b57b469a589d64d81b1688b38dcb537011bb0", "lessThan": "1b585673a2249f13678e7ac443ac683ba767e0b6", "versionType": "git"}, {"status": "affected", "version": "965b57b469a589d64d81b1688b38dcb537011bb0", "lessThan": "90d35188aaa92b8f8b23f66335e0e91bf60103a3", "versionType": "git"}, {"status": "affected", "version": "965b57b469a589d64d81b1688b38dcb537011bb0", "lessThan": "6822eed69572000a181fa4e31fceacc60918c471", "versionType": "git"}, {"status": "affected", "version": "965b57b469a589d64d81b1688b38dcb537011bb0", "lessThan": "7d6d92d000ebe3a845a17c165c1d3a70c5d84fe1", "versionType": "git"}, {"status": "affected", "version": "965b57b469a589d64d81b1688b38dcb537011bb0", "lessThan": "3c94f241f776562c489876ff506f366224565c21", "versionType": "git"}], "programFiles": ["net/ipv4/udp.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.0"}, {"status": "unaffected", "version": "0", "lessThan": "6.0", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.176", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.143", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.94", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.36", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.13", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/ipv4/udp.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/263779a6beff03b8b06f6d25566cb0f45af361f2"}, {"url": "https://git.kernel.org/stable/c/1b585673a2249f13678e7ac443ac683ba767e0b6"}, {"url": "https://git.kernel.org/stable/c/90d35188aaa92b8f8b23f66335e0e91bf60103a3"}, {"url": "https://git.kernel.org/stable/c/6822eed69572000a181fa4e31fceacc60918c471"}, {"url": "https://git.kernel.org/stable/c/7d6d92d000ebe3a845a17c165c1d3a70c5d84fe1"}, {"url": "https://git.kernel.org/stable/c/3c94f241f776562c489876ff506f366224565c21"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nudp: clear skb->dev before running a sockmap verdict\n\nOn the UDP receive path skb->dev is repurposed as dev_scratch (the\ntruesize/state cache set by udp_set_dev_scratch()), through the\nunion { struct net_device *dev; unsigned long dev_scratch; } in sk_buff.\n\nWhen a UDP socket is in a sockmap, sk_data_ready is\nsk_psock_verdict_data_ready(), which calls udp_read_skb() -> recv_actor()\n(sk_psock_verdict_recv) to run the attached SK_SKB verdict program in softirq.\nIf that program calls a socket-lookup helper (bpf_sk_lookup_tcp/udp,\nbpf_skc_lookup_tcp), bpf_skc_lookup() does:\n\n\tif (skb->dev)\n\t\tcaller_net = dev_net(skb->dev);\n\nskb->dev still holds the dev_scratch value (a non-NULL integer), so dev_net()\ndereferences it as a struct net_device * and the kernel takes a general\nprotection fault on a non-canonical address in softirq:\n\n Oops: general protection fault, probably for non-canonical address 0x1010000800004a0\n CPU: 1 UID: 0 PID: 1406 Comm: syz.2.19 Not tainted 7.1.0-rc6 #1 PREEMPT(full)\n RIP: 0010:bpf_skc_lookup net/core/filter.c:7033 [inline]\n RIP: 0010:bpf_sk_lookup+0x45/0x160 net/core/filter.c:7047\n Call Trace:\n <IRQ>\n bpf_prog_4675cb904b7071f8+0x12e/0x14e\n bpf_prog_run_pin_on_cpu+0xc6/0x1f0\n sk_psock_verdict_recv+0x1ba/0x350\n udp_read_skb+0x31a/0x370\n sk_psock_verdict_data_ready+0x2e3/0x600\n __udp_enqueue_schedule_skb+0x4c8/0x650\n udpv6_queue_rcv_one_skb+0x3ec/0x740\n udp6_unicast_rcv_skb+0x11d/0x140\n ip6_protocol_deliver_rcu+0x61e/0x950\n ip6_input_finish+0xa9/0x150\n NF_HOOK+0x286/0x2f0\n ip6_input+0x117/0x220\n NF_HOOK+0x286/0x2f0\n __netif_receive_skb+0x85/0x200\n process_backlog+0x374/0x9a0\n __napi_poll+0x4f/0x1c0\n net_rx_action+0x3b0/0x770\n handle_softirqs+0x15a/0x460\n do_softirq+0x57/0x80\n </IRQ>\n\nThe rmem charge that dev_scratch accounted for is released by skb_recv_udp() on\ndequeue, just above, so the scratch is dead by the time recv_actor() runs. Clear\nskb->dev so bpf_skc_lookup() falls back to sock_net(skb->sk), which\nskb_set_owner_sk_safe() set just above."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.176", "versionStartIncluding": "6.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.143", "versionStartIncluding": "6.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.94", "versionStartIncluding": "6.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.36", "versionStartIncluding": "6.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0.13", "versionStartIncluding": "6.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1", "versionStartIncluding": "6.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:33:51.091Z"}}}, "cveMetadata": {"cveId": "CVE-2026-53184", "state": "PUBLISHED", "dateUpdated": "2026-10-19T19:57:26.714Z", "dateReserved": "2026-06-09T07:44:35.390Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-06-25T08:38:58.189Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/ipv4/udp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "263779a6beff03b8b06f6d25566cb0f45af361f2", "status": "affected", "version": "965b57b469a589d64d81b1688b38dcb537011bb0", "versionType": "git"}, {"lessThan": "1b585673a2249f13678e7ac443ac683ba767e0b6", "status": "affected", "version": "965b57b469a589d64d81b1688b38dcb537011bb0", "versionType": "git"}, {"lessThan": "90d35188aaa92b8f8b23f66335e0e91bf60103a3", "status": "affected", "version": "965b57b469a589d64d81b1688b38dcb537011bb0", "versionType": "git"}, {"lessThan": "6822eed69572000a181fa4e31fceacc60918c471", "status": "affected", "version": "965b57b469a589d64d81b1688b38dcb537011bb0", "versionType": "git"}, {"lessThan": "7d6d92d000ebe3a845a17c165c1d3a70c5d84fe1", "status": "affected", "version": "965b57b469a589d64d81b1688b38dcb537011bb0", "versionType": "git"}, {"lessThan": "3c94f241f776562c489876ff506f366224565c21", "status": "affected", "version": "965b57b469a589d64d81b1688b38dcb537011bb0", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/ipv4/udp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.0"}, {"lessThan": "6.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.176", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.143", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.94", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.36", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.13", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"affectedData": [{"defaultStatus": "unknown", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8D193E9E-2E9B-468E-B920-AD1EA1BA82C7", "versionEndExcluding": "6.1.176", "versionStartIncluding": "6.0", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9062F1CD-CAD6-4EA2-A73F-C06D4A887B8C", "versionEndExcluding": "6.6.143", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "85421C0C-ABDE-4357-971C-67F9087DE1B9", "versionEndExcluding": "6.12.94", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "389025D2-958D-41BD-BD96-70ED1033A9F3", "versionEndExcluding": "6.18.36", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6A64BF9F-3BCA-42FD-98CB-8F03474D2B1E", "versionEndExcluding": "7.0.13", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*", "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*", "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*", "matchCriteriaId": "B0E8FC71-3952-444C-83E9-718DBBBEC615", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nudp: clear skb->dev before running a sockmap verdict\n\nOn the UDP receive path skb->dev is repurposed as dev_scratch (the\ntruesize/state cache set by udp_set_dev_scratch()), through the\nunion { struct net_device *dev; unsigned long dev_scratch; } in sk_buff.\n\nWhen a UDP socket is in a sockmap, sk_data_ready is\nsk_psock_verdict_data_ready(), which calls udp_read_skb() -> recv_actor()\n(sk_psock_verdict_recv) to run the attached SK_SKB verdict program in softirq.\nIf that program calls a socket-lookup helper (bpf_sk_lookup_tcp/udp,\nbpf_skc_lookup_tcp), bpf_skc_lookup() does:\n\n\tif (skb->dev)\n\t\tcaller_net = dev_net(skb->dev);\n\nskb->dev still holds the dev_scratch value (a non-NULL integer), so dev_net()\ndereferences it as a struct net_device * and the kernel takes a general\nprotection fault on a non-canonical address in softirq:\n\n Oops: general protection fault, probably for non-canonical address 0x1010000800004a0\n CPU: 1 UID: 0 PID: 1406 Comm: syz.2.19 Not tainted 7.1.0-rc6 #1 PREEMPT(full)\n RIP: 0010:bpf_skc_lookup net/core/filter.c:7033 [inline]\n RIP: 0010:bpf_sk_lookup+0x45/0x160 net/core/filter.c:7047\n Call Trace:\n <IRQ>\n bpf_prog_4675cb904b7071f8+0x12e/0x14e\n bpf_prog_run_pin_on_cpu+0xc6/0x1f0\n sk_psock_verdict_recv+0x1ba/0x350\n udp_read_skb+0x31a/0x370\n sk_psock_verdict_data_ready+0x2e3/0x600\n __udp_enqueue_schedule_skb+0x4c8/0x650\n udpv6_queue_rcv_one_skb+0x3ec/0x740\n udp6_unicast_rcv_skb+0x11d/0x140\n ip6_protocol_deliver_rcu+0x61e/0x950\n ip6_input_finish+0xa9/0x150\n NF_HOOK+0x286/0x2f0\n ip6_input+0x117/0x220\n NF_HOOK+0x286/0x2f0\n __netif_receive_skb+0x85/0x200\n process_backlog+0x374/0x9a0\n __napi_poll+0x4f/0x1c0\n net_rx_action+0x3b0/0x770\n handle_softirqs+0x15a/0x460\n do_softirq+0x57/0x80\n </IRQ>\n\nThe rmem charge that dev_scratch accounted for is released by skb_recv_udp() on\ndequeue, just above, so the scratch is dead by the time recv_actor() runs. Clear\nskb->dev so bpf_skc_lookup() falls back to sock_net(skb->sk), which\nskb_set_owner_sk_safe() set just above."}], "id": "CVE-2026-53184", "lastModified": "2026-10-19T20:19:06.890", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53184", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:26:17.874900Z", "version": "2.0.3"}}]}, "published": "2026-06-25T09:16:35.800", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1b585673a2249f13678e7ac443ac683ba767e0b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/263779a6beff03b8b06f6d25566cb0f45af361f2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3c94f241f776562c489876ff506f366224565c21"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6822eed69572000a181fa4e31fceacc60918c471"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7d6d92d000ebe3a845a17c165c1d3a70c5d84fe1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/90d35188aaa92b8f8b23f66335e0e91bf60103a3"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: udp: clear skb->dev before running a sockmap verdict", "id": "2492713", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492713"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-909", "details": ["A flaw was found in the Linux kernel. When a User Datagram Protocol (UDP) socket is configured with a sockmap, and a BPF (Berkeley Packet Filter) program attached to it calls a socket-lookup helper, the `skb->dev` field is not properly cleared. This improper handling of the `skb->dev` field can lead to a general protection fault, resulting in a Denial of Service (DoS) condition. A local attacker with the necessary permissions to load BPF programs could potentially trigger this vulnerability."], "name": "CVE-2026-53184", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53184\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53184\nhttps://lore.kernel.org/linux-cve-announce/2026062556-CVE-2026-53184-a7a3@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[965b57b469a589d64d81b1688b38dcb537011bb0,263779a6beff03b8b06f6d25566cb0f45af361f2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[965b57b469a589d64d81b1688b38dcb537011bb0,1b585673a2249f13678e7ac443ac683ba767e0b6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[965b57b469a589d64d81b1688b38dcb537011bb0,90d35188aaa92b8f8b23f66335e0e91bf60103a3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[965b57b469a589d64d81b1688b38dcb537011bb0,6822eed69572000a181fa4e31fceacc60918c471)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[965b57b469a589d64d81b1688b38dcb537011bb0,7d6d92d000ebe3a845a17c165c1d3a70c5d84fe1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[965b57b469a589d64d81b1688b38dcb537011bb0,3c94f241f776562c489876ff506f366224565c21)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.176,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.143,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.94,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.36,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.13,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-06-25T11:15:10.154043+00:00", "updated": "2026-10-23T00:30:08.821182+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}