{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"c8b72ca0918e95f708f67c8b3e69b05290f2b6d2","status":"affected","version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","versionType":"git"},{"lessThan":"6e492cb98ca69cc1145175e23e22e3b84da7f26d","status":"affected","version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","versionType":"git"},{"lessThan":"7bb6a35bd6d69019539d8782fb590fd2aa8a3236","status":"affected","version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","versionType":"git"},{"lessThan":"6abd93d01b0f495f29201925a5ee8e6a583c4044","status":"affected","version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","versionType":"git"},{"lessThan":"a6101d62ccfa153db8c218ce59362b8e0316fd4f","status":"affected","version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","versionType":"git"},{"lessThan":"b8b7d28dc2b7472ffd1eff3954c38f1976b21a7b","status":"affected","version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","versionType":"git"},{"lessThan":"fa8c78c0e49aa11fae116fd841e41aa8f2d68751","status":"affected","version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","versionType":"git"},{"lessThan":"dddf197f29ba5e47a476dde82bf542ca2e0d5e5e","status":"affected","version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"5.0"},{"lessThan":"5.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.273","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.224","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.191","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.161","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.115","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.59","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.13","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2026-99246","cwes":[],"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.","epss":null,"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793704705838,"publishedAt":1793704705838,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/c8b72ca0918e95f708f67c8b3e69b05290f2b6d2"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/6e492cb98ca69cc1145175e23e22e3b84da7f26d"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/7bb6a35bd6d69019539d8782fb590fd2aa8a3236"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/6abd93d01b0f495f29201925a5ee8e6a583c4044"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/a6101d62ccfa153db8c218ce59362b8e0316fd4f"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/b8b7d28dc2b7472ffd1eff3954c38f1976b21a7b"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/fa8c78c0e49aa11fae116fd841e41aa8f2d68751"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/dddf197f29ba5e47a476dde82bf542ca2e0d5e5e"}],"remediation":[],"revision":"17125a81294824cd4d305f24147578b29d00b7aa9c1c2a6044452578ab0199a3","sources":[{"modifiedAt":1793704705838,"name":"CNA: Linux","retrievedAt":1793707722702,"url":"https://www.cve.org/CVERecord?id=CVE-2026-99246"}],"ssvc":null,"status":"published","title":"tipc: protect node reset trace dump with node lock","updatedAt":1793707722702}