{"id":"CVE-2026-92515","revision":"da920668cdf241f5aa35d110b104de42","records":[{"revision":"da920668cdf241f5aa35d110b104de42","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-92515","aliases":[],"title":"bpf: Preserve unique-field state across nested structs","description":"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 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.","state":0,"publishedAt":"2026-09-17T16:10:24.159+00:00","modifiedAt":"2026-10-19T09:04:21.819+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/bpf/btf.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"64e8ee814819f21beeeda00d4119221443d77992\",\n                            \"lessThan\": \"cec97102d4147e18568c93946014c4c8ebf86fcf\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"64e8ee814819f21beeeda00d4119221443d77992\",\n                            \"lessThan\": \"28d5f20ed022ade0fb0bfbf50b78fec782083175\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"64e8ee814819f21beeeda00d4119221443d77992\",\n                            \"lessThan\": \"373a1e9366e711b89bc5e45bd6edf33ef62402cd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"64e8ee814819f21beeeda00d4119221443d77992\",\n                            \"lessThan\": \"f08619f060468076e4acbdc10e0713af20d60e65\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/bpf/btf.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.11\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.11\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/cec97102d4147e18568c93946014c4c8ebf86fcf","https://git.kernel.org/stable/c/28d5f20ed022ade0fb0bfbf50b78fec782083175","https://git.kernel.org/stable/c/373a1e9366e711b89bc5e45bd6edf33ef62402cd","https://git.kernel.org/stable/c/f08619f060468076e4acbdc10e0713af20d60e65"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-92515","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-92515","identifiers":["CVE-2026-92515"]},"retained":false,"historicalAffected":[]}],"coverage":[]}