{"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":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-825"],"vendor":"Linux","product":"Linux","affected":["Linux >= 0de2046137f976e7302d43ac01d9894d07ac1fff < cc2e065ed206aecd9b94564779244f3ffb26e356","Linux >= 0de2046137f976e7302d43ac01d9894d07ac1fff < 71930202a0a0c49f0a3b45b41907a074cb780266","Linux >= 0de2046137f976e7302d43ac01d9894d07ac1fff < 7b7b8b5960102566bd625ae829d1f330c5b5d104","Linux 6.15"],"published":"2026-09-25","updated":"2026-09-30","sourceUpdated":"2026-09-30T14:10:59.253","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"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98060.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98060"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541218"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98060"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98060"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98060.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00198,"epssPercentile":0.09552,"cvssSource":"vendor","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.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-09-29 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98060.json)","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":212388,"id":"CVE-2026-98060","ts":1790668162453,"field":"cvss","old":null,"new":"7"},{"seq":212387,"id":"CVE-2026-98060","ts":1790668162453,"field":"severity","old":"none","new":"high"}]}