{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53184","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.390Z","datePublished":"2026-06-25T08:38:58.189Z","dateUpdated":"2026-06-28T06:39:58.363Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-28T06:39:58.363Z"},"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."}],"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"}}],"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"}}}}