{"schema":"threatline.record/2","record":{"id":"CVE-2026-98007","aliases":[],"summary":"bpf: Reject non-scalar bpf_loop iteration counts","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject non-scalar bpf_loop iteration counts\n\nbpf_loop() declares its nr_loops argument as ARG_ANYTHING. Privileged\nprograms may pass pointer values to such arguments, so check_func_arg()\nlets a pointer-valued R1 reach the helper-specific checks.\n\nSince commit bb124da69c47 (\"bpf: keep track of max number of bpf_loop\ncallback iterations\"), the verifier marks R1 precise and reads its upper\nbound to limit callback simulation. Precision backtracking only accepts\nscalar registers, so passing a pointer instead triggers the \"backtracking\nmisuse\" verifier warning. Kernels with panic_on_warn enabled subsequently\npanic.\n\nIntroduce ARG_SCALAR for helper arguments that only accept scalar values\nand use it for bpf_loop() nr_loops. Generic helper argument validation then\nrejects pointers before loop inlining and precision processing.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98007","source_modified_at":"2026-10-19T09:12:12.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"bfc5c19b4b48840627af0d0f1c8f4461b276e508","lessThan":"2ff38b3552af53238aee6c877ae64cc798d46fce","status":"affected","versionType":"git"},{"version":"bb124da69c47dd98d69361ec13244ece50bec63e","lessThan":"656d40d1ca228ee21a9b3280432479fc9eae75ab","status":"affected","versionType":"git"},{"version":"bb124da69c47dd98d69361ec13244ece50bec63e","lessThan":"e2e1161e03fecff6d2229a81b024337144bfcd97","status":"affected","versionType":"git"},{"version":"bb124da69c47dd98d69361ec13244ece50bec63e","lessThan":"f8ae8275c721334ee50fafdd986fb83294eb941a","status":"affected","versionType":"git"},{"version":"bb124da69c47dd98d69361ec13244ece50bec63e","lessThan":"c3fd8e5fd100f122bad503bdc0e9277219533253","status":"affected","versionType":"git"},{"version":"6.6.15","lessThan":"6.6.158","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98007","source_modified_at":"2026-10-19T09:12:12.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.7","status":"affected"},{"version":"0","lessThan":"6.7","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98007","source_modified_at":"2026-10-19T09:12:12.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"2ff38b3552af53238aee6c877ae64cc798d46fce","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98007","source_modified_at":"2026-10-19T09:12:12.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"656d40d1ca228ee21a9b3280432479fc9eae75ab","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98007","source_modified_at":"2026-10-19T09:12:12.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6.6.158","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00168,"percentile":0.05716,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:23:32.939Z","modified_at":"2026-10-19T09:12:12.779Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98007","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:12:12.779Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98007","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/2ff38b3552af53238aee6c877ae64cc798d46fce"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/656d40d1ca228ee21a9b3280432479fc9eae75ab"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e2e1161e03fecff6d2229a81b024337144bfcd97"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f8ae8275c721334ee50fafdd986fb83294eb941a"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/c3fd8e5fd100f122bad503bdc0e9277219533253"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:12:12.779Z","content_hash":"ad99505c8e85da54313c7847b40e13148249bd2c93bbb1d35ab3fcd31d7508c1"}}