{"id":"CVE-2026-98060","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject resilient lock operations in rbtree callbacks\n\n__bpf_rbtree_add() keeps parent and link pointers live across calls to the\nprogram-supplied comparison callba…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject resilient lock operations in rbtree callbacks\n\n__bpf_rbtree_add() keeps parent and link pointers live across calls to the\nprogram-supplied comparison callba…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 0de2046137f976e7302d43ac01d9894d07ac1fff < cc2e065ed206aecd9b94564779244f3ffb26e356","Linux >= 0de2046137f976e7302d43ac01d9894d07ac1fff < 71930202a0a0c49f0a3b45b41907a074cb780266","Linux >= 0de2046137f976e7302d43ac01d9894d07ac1fff < 7b7b8b5960102566bd625ae829d1f330c5b5d104","Linux 6.15"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:35.000","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98060","references":[{"url":"https://git.kernel.org/stable/c/71930202a0a0c49f0a3b45b41907a074cb780266","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7b7b8b5960102566bd625ae829d1f330c5b5d104","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cc2e065ed206aecd9b94564779244f3ffb26e356","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-25T11:06:38.842Z","slug":"CVE-2026-98060","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject resilient lock operations in rbtree callbacks\n\n__bpf_rbtree_add() keeps parent and link pointers live across calls to the\nprogram-supplied comparison callback. The verifier therefore requires the\nroot's lock to remain held throughout the callback.\n\nThe helper path enforces this rule for bpf_spin_lock() and\nbpf_spin_unlock(), but the resilient lock kfunc argument path does not.\nSince resilient locks may protect BPF rbtree roots, a callback can release\nthe root lock and let another CPU remove and free the node referenced by\nthe in-progress tree walk. The walk then resumes using freed pointers.\n\nReject resilient lock kfuncs in an rbtree comparison callback, matching\nthe existing policy for the spin lock helpers. Resilient-lock-protected\ntrees remain valid when their comparison callbacks leave lock state alone.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}