{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"412ba7def06ffe974ba9a1d862b022362c54ffa5","status":"affected","version":"e9897071350bd9d94a56b5b6f79c85b1a98fc7e7","versionType":"git"},{"lessThan":"c6cb5f8ebe1c1a78710c19f102db9fe48b9e6ba9","status":"affected","version":"e9897071350bd9d94a56b5b6f79c85b1a98fc7e7","versionType":"git"},{"lessThan":"5f42729d74bd6c61306d864423290d92962de4e1","status":"affected","version":"e9897071350bd9d94a56b5b6f79c85b1a98fc7e7","versionType":"git"},{"lessThan":"76d030ac95e17f91d69a595f17ebc5979700cf9a","status":"affected","version":"e9897071350bd9d94a56b5b6f79c85b1a98fc7e7","versionType":"git"},{"lessThan":"8820b530cb2388503d7418228d03ba074bf7a03e","status":"affected","version":"e9897071350bd9d94a56b5b6f79c85b1a98fc7e7","versionType":"git"},{"lessThan":"2ca18df1c2611f70eb3eb487e02ae85eb703b284","status":"affected","version":"e9897071350bd9d94a56b5b6f79c85b1a98fc7e7","versionType":"git"},{"lessThan":"f91883031e5a62877a29ce139442973cbea769f1","status":"affected","version":"e9897071350bd9d94a56b5b6f79c85b1a98fc7e7","versionType":"git"},{"lessThan":"7993211bde166471dffac074dc965489f86531f8","status":"affected","version":"e9897071350bd9d94a56b5b6f79c85b1a98fc7e7","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"3.11"},{"lessThan":"3.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]}],"cveId":"CVE-2026-64423","cwes":["CWE-416"],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: igmp: remove multicast group from hash table on device destruction\n\nWhen a device is destroyed under RTNL, ip_mc_destroy_dev() iterates through\nthe multicast list and calls ip_ma_put() on each membership, scheduling\nthem for RCU reclamation. However, they are not unlinked from the device's\nmulticast hash table (mc_hash).\n\nSince the device remains published in dev->ip_ptr until after\nip_mc_destroy_dev() completes, concurrent RCU readers traversing mc_hash\ncan still locate and access the multicast group after its refcount is\ndecremented. If the RCU callback runs and frees the group while a reader is\naccessing it, a use-after-free occurs.\n\nFix this by unlinking the multicast group from mc_hash using\nip_mc_hash_remove() before scheduling it for reclamation.\n\nBUG: KASAN: slab-use-after-free in ip_check_mc_rcu+0x149/0x3f0\nRead of size 4 at addr ffff888009bf1408 by task mausezahn/2276\n\nCall Trace:\n <IRQ>\n dump_stack_lvl+0x67/0x90\n print_report+0x175/0x7c0\n kasan_report+0x147/0x180\n ip_check_mc_rcu+0x149/0x3f0\n udp_v4_early_demux+0x36d/0x12d0\n ip_rcv_finish_core+0xb8b/0x1390\n ip_rcv_finish+0x54/0x120\n NF_HOOK+0x213/0x2b0\n __netif_receive_skb+0x126/0x340\n process_backlog+0x4f2/0xf00\n __napi_poll+0x92/0x2c0\n net_rx_action+0x583/0xc60\n handle_softirqs+0x236/0x7f0\n do_softirq+0x57/0x80\n </IRQ>\n\nAllocated by task 2239:\n kasan_save_track+0x3e/0x80\n __kasan_kmalloc+0x72/0x90\n ____ip_mc_inc_group+0x31a/0xa40\n __ip_mc_join_group+0x334/0x3f0\n do_ip_setsockopt+0x16fa/0x2010\n ip_setsockopt+0x3f/0x90\n do_sock_setsockopt+0x1ad/0x300\n\nFreed by task 0:\n kasan_save_track+0x3e/0x80\n kasan_save_free_info+0x40/0x50\n __kasan_slab_free+0x3a/0x60\n __rcu_free_sheaf_prepare+0xd4/0x220\n rcu_free_sheaf+0x36/0x190\n rcu_core+0x8d9/0x12f0\n handle_softirqs+0x236/0x7f0","epss":{"date":"2026-11-09","percentile":0.02766,"score":0.00132},"exploits":[],"kev":null,"metrics":[{"score":7.8,"severity":"high","source":"CNA: Linux","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794314962132,"publishedAt":1784969461485,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/412ba7def06ffe974ba9a1d862b022362c54ffa5"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/c6cb5f8ebe1c1a78710c19f102db9fe48b9e6ba9"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/5f42729d74bd6c61306d864423290d92962de4e1"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/76d030ac95e17f91d69a595f17ebc5979700cf9a"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/8820b530cb2388503d7418228d03ba074bf7a03e"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/2ca18df1c2611f70eb3eb487e02ae85eb703b284"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/f91883031e5a62877a29ce139442973cbea769f1"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/7993211bde166471dffac074dc965489f86531f8"},{"source":"ADP: siemens-SADP","tags":[],"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html"},{"source":"ADP: siemens-SADP","tags":[],"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}],"remediation":[],"revision":"85506617f09f5d7eaa56a072a61bd9ca493c74f4b8cd4816763bc98564eb7f9c","sources":[{"modifiedAt":1794314962132,"name":"CNA: Linux","retrievedAt":1794316737776,"url":"https://www.cve.org/CVERecord?id=CVE-2026-64423"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794316747534,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-64423"}],"ssvc":{"assessedAt":1792165231437,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"ipv4: igmp: remove multicast group from hash table on device destruction","updatedAt":1794316747534}