{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98007","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:19:56.068Z","datePublished":"2026-09-25T10:23:32.939Z","dateUpdated":"2026-10-03T11:01:27.146Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-03T11:01:27.146Z"},"descriptions":[{"lang":"en","value":"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/bpf.h","kernel/bpf/bpf_iter.c","kernel/bpf/verifier.c"],"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"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/bpf.h","kernel/bpf/bpf_iter.c","kernel/bpf/verifier.c"],"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-rc2","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":"6.6.15","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.3-rc2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2ff38b3552af53238aee6c877ae64cc798d46fce"},{"url":"https://git.kernel.org/stable/c/656d40d1ca228ee21a9b3280432479fc9eae75ab"},{"url":"https://git.kernel.org/stable/c/e2e1161e03fecff6d2229a81b024337144bfcd97"},{"url":"https://git.kernel.org/stable/c/f8ae8275c721334ee50fafdd986fb83294eb941a"},{"url":"https://git.kernel.org/stable/c/c3fd8e5fd100f122bad503bdc0e9277219533253"}],"title":"bpf: Reject non-scalar bpf_loop iteration counts","x_generator":{"engine":"bippy-1.2.0"}}}}