{"id":"CVE-2026-92515","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Preserve unique-field state across nested structs\n\nbtf_find_struct_field() initializes a fresh seen mask for every recursive\ndescent","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Preserve unique-field state across nested structs\n\nbtf_find_struct_field() initializes a fresh seen mask for every recursive\ndescent. Unique special fields in diff…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 64e8ee814819f21beeeda00d4119221443d77992 < cec97102d4147e18568c93946014c4c8ebf86fcf","Linux >= 64e8ee814819f21beeeda00d4119221443d77992 < 28d5f20ed022ade0fb0bfbf50b78fec782083175","Linux >= 64e8ee814819f21beeeda00d4119221443d77992 < 373a1e9366e711b89bc5e45bd6edf33ef62402cd","Linux >= 64e8ee814819f21beeeda00d4119221443d77992 < f08619f060468076e4acbdc10e0713af20d60e65","Linux 6.11"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:54.360","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92515","references":[{"url":"https://git.kernel.org/stable/c/28d5f20ed022ade0fb0bfbf50b78fec782083175","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/373a1e9366e711b89bc5e45bd6edf33ef62402cd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cec97102d4147e18568c93946014c4c8ebf86fcf","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f08619f060468076e4acbdc10e0713af20d60e65","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.778Z","epss":0.002,"epssPercentile":0.10114,"slug":"CVE-2026-92515","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Preserve unique-field state across nested structs\n\nbtf_find_struct_field() initializes a fresh seen mask for every recursive\ndescent. Unique special fields in different levels of the same aggregate\ntherefore do not see one another. The duplicate fields can reach\nbtf_parse_fields(), where they trigger an invariant WARN_ON_ONCE(). A\ncrafted user BTF can consequently trigger the warning before map creation\nchecks capabilities.\n\nInitialize the seen mask once in btf_find_field() and pass the same pointer\nthrough struct, datasec, and nested-struct walks. This gives the entire field\ntraversal one shared uniqueness state.\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":[]}