{"api_version":"1","generated_at":"2026-09-19T08:40:32+00:00","cve":"CVE-2026-92515","urls":{"html":"https://cve.report/CVE-2026-92515","api":"https://cve.report/api/cve/CVE-2026-92515.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-92515","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-92515"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:54","updated_at":"2026-09-17 17:17:54"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/28d5f20ed022ade0fb0bfbf50b78fec782083175","name":"https://git.kernel.org/stable/c/28d5f20ed022ade0fb0bfbf50b78fec782083175","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/373a1e9366e711b89bc5e45bd6edf33ef62402cd","name":"https://git.kernel.org/stable/c/373a1e9366e711b89bc5e45bd6edf33ef62402cd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cec97102d4147e18568c93946014c4c8ebf86fcf","name":"https://git.kernel.org/stable/c/cec97102d4147e18568c93946014c4c8ebf86fcf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f08619f060468076e4acbdc10e0713af20d60e65","name":"https://git.kernel.org/stable/c/f08619f060468076e4acbdc10e0713af20d60e65","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92515","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92515","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 64e8ee814819f21beeeda00d4119221443d77992 cec97102d4147e18568c93946014c4c8ebf86fcf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 64e8ee814819f21beeeda00d4119221443d77992 28d5f20ed022ade0fb0bfbf50b78fec782083175 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 64e8ee814819f21beeeda00d4119221443d77992 373a1e9366e711b89bc5e45bd6edf33ef62402cd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 64e8ee814819f21beeeda00d4119221443d77992 f08619f060468076e4acbdc10e0713af20d60e65 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.11","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.11 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"92515","cve":"CVE-2026-92515","epss":"0.002000000","percentile":"0.101580000","score_date":"2026-09-18","updated_at":"2026-09-19 00:06:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/bpf/btf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"cec97102d4147e18568c93946014c4c8ebf86fcf","status":"affected","version":"64e8ee814819f21beeeda00d4119221443d77992","versionType":"git"},{"lessThan":"28d5f20ed022ade0fb0bfbf50b78fec782083175","status":"affected","version":"64e8ee814819f21beeeda00d4119221443d77992","versionType":"git"},{"lessThan":"373a1e9366e711b89bc5e45bd6edf33ef62402cd","status":"affected","version":"64e8ee814819f21beeeda00d4119221443d77992","versionType":"git"},{"lessThan":"f08619f060468076e4acbdc10e0713af20d60e65","status":"affected","version":"64e8ee814819f21beeeda00d4119221443d77992","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/bpf/btf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.11"},{"lessThan":"6.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.11","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:10:24.159Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/cec97102d4147e18568c93946014c4c8ebf86fcf"},{"url":"https://git.kernel.org/stable/c/28d5f20ed022ade0fb0bfbf50b78fec782083175"},{"url":"https://git.kernel.org/stable/c/373a1e9366e711b89bc5e45bd6edf33ef62402cd"},{"url":"https://git.kernel.org/stable/c/f08619f060468076e4acbdc10e0713af20d60e65"}],"title":"bpf: Preserve unique-field state across nested structs","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-92515","datePublished":"2026-09-17T16:10:24.159Z","dateReserved":"2026-09-16T12:21:13.873Z","dateUpdated":"2026-09-17T16:10:24.159Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:54","lastModifiedDate":"2026-09-17 17:17:54","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"92515","Ordinal":"1","Title":"bpf: Preserve unique-field state across nested structs","CVE":"CVE-2026-92515","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"92515","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"bpf: Preserve unique-field state across nested structs"}]}}}