CVE-2026-92515

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-92515", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-16T12:21:13.873Z", "datePublished": "2026-09-17T16:10:24.159Z", "dateUpdated": "2026-10-19T09:04:21.819Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:04:21.819Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/btf.c"], "versions": [{"version": "64e8ee814819f21beeeda00d4119221443d77992", "lessThan": "cec97102d4147e18568c93946014c4c8ebf86fcf", "status": "affected", "versionType": "git"}, {"version": "64e8ee814819f21beeeda00d4119221443d77992", "lessThan": "28d5f20ed022ade0fb0bfbf50b78fec782083175", "status": "affected", "versionType": "git"}, {"version": "64e8ee814819f21beeeda00d4119221443d77992", "lessThan": "373a1e9366e711b89bc5e45bd6edf33ef62402cd", "status": "affected", "versionType": "git"}, {"version": "64e8ee814819f21beeeda00d4119221443d77992", "lessThan": "f08619f060468076e4acbdc10e0713af20d60e65", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/btf.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.3"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-92515", "lastModified": "2026-10-19T10:16:51.973", "metrics": {}, "published": "2026-09-17T17:17:54.360", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/28d5f20ed022ade0fb0bfbf50b78fec782083175"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/373a1e9366e711b89bc5e45bd6edf33ef62402cd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cec97102d4147e18568c93946014c4c8ebf86fcf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f08619f060468076e4acbdc10e0713af20d60e65"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[64e8ee814819f21beeeda00d4119221443d77992,cec97102d4147e18568c93946014c4c8ebf86fcf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[64e8ee814819f21beeeda00d4119221443d77992,28d5f20ed022ade0fb0bfbf50b78fec782083175)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[64e8ee814819f21beeeda00d4119221443d77992,373a1e9366e711b89bc5e45bd6edf33ef62402cd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[64e8ee814819f21beeeda00d4119221443d77992,f08619f060468076e4acbdc10e0713af20d60e65)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.11"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.11)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-19T06:30:16.805388+00:00", "title": "Kernel BPF BTF Duplicate Field Vulnerability Enabling Warning Trigger During Map Creation", "updated": "2026-09-19T14:30:07.277497+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-665"]}