{"identifier":"CVE-2026-99246","cve":{"id":"CVE-2026-99246","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: protect node reset trace dump with node lock\n\nThe tipc_node_reset_links trace event asks tipc_node_dump() to walk the\nnode's link entries. Unlike the other node events that request link data,\nthis event runs without the node lock.\n\nThis permits bearer teardown to free a link while the trace callback is\ndumping it:\n\n  CPU 0                                CPU 1\n  trace_tipc_node_reset_links()\n    tipc_node_dump()\n      l = n->links[0].link\n                                       tipc_node_write_lock()\n                                       kfree(l)\n                                       n->links[0].link = NULL\n                                       tipc_node_write_unlock()\n      tipc_link_dump(l)\n\ntipc_link_dump() then dereferences the stale pointer. KASAN reported:\n\n  BUG: KASAN: slab-use-after-free in tipc_link_dump\n  Read of size 4 by task poc/115\n  Call Trace:\n   tipc_link_dump+0x10cb/0x16b0\n   tipc_node_dump+0x4bb/0x740\n   trace_event_raw_event_tipc_node_class+0x258/0x360\n   tipc_node_reset_links+0x14d/0x1a0\n   tipc_rcv+0x13f5/0x3030\n   tipc_udp_recv+0x4e3/0x670\n  Allocated by task 0:\n   tipc_link_create+0x1e1/0x1020\n   tipc_node_check_dest+0x7d2/0x11a0\n   tipc_disc_rcv+0xdbf/0x1430\n  Freed by task 89:\n   kfree+0x131/0x3c0\n   tipc_node_link_down+0x267/0x4b0\n   tipc_node_delete_links+0xec/0x160\n   bearer_disable+0x107/0x260\n\nTake the node write lock around the trace event. This serializes the\ndump against tipc_node_link_down(delete=true), which frees the link\nunder the same write lock.","published":"2026-11-03T12:17:31.030000+00:00","modified":"2026-11-03T20:18:31.013000+00:00","status":"Received","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_version":"3.1","affected":[],"weaknesses":[],"references":[{"url":"https://git.kernel.org/stable/c/6abd93d01b0f495f29201925a5ee8e6a583c4044","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6e492cb98ca69cc1145175e23e22e3b84da7f26d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7bb6a35bd6d69019539d8782fb590fd2aa8a3236","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a6101d62ccfa153db8c218ce59362b8e0316fd4f","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b8b7d28dc2b7472ffd1eff3954c38f1976b21a7b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c8b72ca0918e95f708f67c8b3e69b05290f2b6d2","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dddf197f29ba5e47a476dde82bf542ca2e0d5e5e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fa8c78c0e49aa11fae116fd841e41aa8f2d68751","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"kev":null,"kev_checked":true,"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9}]},"configurations":[],"source":"nvd","retrieved_at":"2026-11-03T23:31:58.133610+00:00","exploited":false,"kev_stale":false,"products":[],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence.","Fresh EPSS data is unavailable; missing values are not zero."]},"epss":null,"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"git.kernel.org","source_url":"https://git.kernel.org/stable/c/6abd93d01b0f495f29201925a5ee8e6a583c4044","investigate_url":"https://investigate.aeglixmind.com/#git.kernel.org"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-99246","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-99246","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-99246","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. A mention is not proof of exploitation, attribution or tool suitability. Missing matches do not establish absence."}}