{"id":"CVE-2026-99246","aliases":[],"cve":{"records":[{"id":"CVE-2026-99246","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:25:14.403Z","published":"2026-11-03T11:18:25.838Z","modified":"2026-11-03T19:14:37.365Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-11-03T19:14:37.365Z"}],"references":[{"url":"https://git.kernel.org/stable/c/c8b72ca0918e95f708f67c8b3e69b05290f2b6d2","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/6e492cb98ca69cc1145175e23e22e3b84da7f26d","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/7bb6a35bd6d69019539d8782fb590fd2aa8a3236","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/6abd93d01b0f495f29201925a5ee8e6a583c4044","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/a6101d62ccfa153db8c218ce59362b8e0316fd4f","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/b8b7d28dc2b7472ffd1eff3954c38f1976b21a7b","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/fa8c78c0e49aa11fae116fd841e41aa8f2d68751","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/dddf197f29ba5e47a476dde82bf542ca2e0d5e5e","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.6.161"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.12.115"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.18.59"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"7.2.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"7.3"}]}]}]}],"prioritization":[]},"title":"tipc: protect node reset trace dump with node lock","titleSource":"Linux","descriptionSource":"Linux","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.","score":8.1,"severity":"high","published":"2026-11-03T11:18:25.838Z","modified":"2026-11-03T19:14:37.365Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","status":"affected","lessThan":"c8b72ca0918e95f708f67c8b3e69b05290f2b6d2","versionType":"git"},{"version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","status":"affected","lessThan":"6e492cb98ca69cc1145175e23e22e3b84da7f26d","versionType":"git"},{"version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","status":"affected","lessThan":"7bb6a35bd6d69019539d8782fb590fd2aa8a3236","versionType":"git"},{"version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","status":"affected","lessThan":"6abd93d01b0f495f29201925a5ee8e6a583c4044","versionType":"git"},{"version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","status":"affected","lessThan":"a6101d62ccfa153db8c218ce59362b8e0316fd4f","versionType":"git"},{"version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","status":"affected","lessThan":"b8b7d28dc2b7472ffd1eff3954c38f1976b21a7b","versionType":"git"},{"version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","status":"affected","lessThan":"fa8c78c0e49aa11fae116fd841e41aa8f2d68751","versionType":"git"},{"version":"eb18a510b5cd4daeb9736ad8db57a9fc49db185b","status":"affected","lessThan":"dddf197f29ba5e47a476dde82bf542ca2e0d5e5e","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99246"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"5.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.0","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.161","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.115","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.59","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.13","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99246"}],"remediation":[],"references":["https://git.kernel.org/stable/c/c8b72ca0918e95f708f67c8b3e69b05290f2b6d2","https://git.kernel.org/stable/c/6e492cb98ca69cc1145175e23e22e3b84da7f26d","https://git.kernel.org/stable/c/7bb6a35bd6d69019539d8782fb590fd2aa8a3236","https://git.kernel.org/stable/c/6abd93d01b0f495f29201925a5ee8e6a583c4044","https://git.kernel.org/stable/c/a6101d62ccfa153db8c218ce59362b8e0316fd4f","https://git.kernel.org/stable/c/b8b7d28dc2b7472ffd1eff3954c38f1976b21a7b","https://git.kernel.org/stable/c/fa8c78c0e49aa11fae116fd841e41aa8f2d68751","https://git.kernel.org/stable/c/dddf197f29ba5e47a476dde82bf542ca2e0d5e5e"],"sources":[{"name":"CVE","id":"CVE-2026-99246","modified":"2026-11-03T19:14:37.365Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-99246"}],"assessments":[{"source":"Linux","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1}],"sourceAffected":[],"observedAt":"2026-11-03T19:51:02.578Z","kev":{"status":"not-listed","checkedAt":"2026-11-06T21:20:33.816Z"},"coverage":[{"source":"NVD","status":"no-result","checkedAt":"2026-11-03T11:30:35.958Z","attemptedAt":"2026-11-03T11:30:35.958Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-11-03T11:30:36.232Z","attemptedAt":"2026-11-03T11:30:36.232Z"},{"source":"EUVD","status":"no-result","checkedAt":"2026-11-03T11:30:36.896Z","attemptedAt":"2026-11-03T11:30:36.896Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-03T11:30:36.329Z","attemptedAt":"2026-11-03T11:30:36.329Z"}],"evidence":[],"aiSummary":{"text":"The Linux kernel's tipc_node_reset_links trace event may dereference a stale pointer, potentially causing a slab-use-after-free error, due to a lack of node lock protection. This issue affects Linux kernel versions starting from 5.0. The vulnerability requires access to the system and may be triggered by a race condition between the trace event and bearer teardown.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-03T12:21:15.880Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-99246"}]}}