{"api_version":"1","generated_at":"2026-10-01T05:18:44+00:00","cve":"CVE-2026-98019","urls":{"html":"https://cve.report/CVE-2026-98019","api":"https://cve.report/api/cve/CVE-2026-98019.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98019","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98019"},"summary":{"title":"bpf: mark a NULL call argument precise","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: mark a NULL call argument precise\n\ncheck_func_arg() allows bpf_register_is_null() for nullable arguments\nw/o marking the underlying scalar register precise. Hence a checkpoint\ncreated on such a path would prune against arbitrary scalar value.\n\ncheck_helper_call() enforces second parameter of the\nbpf_get_local_storage() to be zero, w/o marking the underlying scalar\nregister precise. Hence a checkpoint created on such a path would\nprune against arbitrary scalar value.\n\nGrouping these two into one patch, as they share the same fixes tag.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:30","updated_at":"2026-09-25 11:17:30"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/69a9ad004ccf5d45e534c7d503f47f643abe64b7","name":"https://git.kernel.org/stable/c/69a9ad004ccf5d45e534c7d503f47f643abe64b7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1a3a10b030c96ea88868ccc060a16827c01eaa5a","name":"https://git.kernel.org/stable/c/1a3a10b030c96ea88868ccc060a16827c01eaa5a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98019","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98019","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b5dc0163d8fd78e64a7e21f309cf932fda34353e 69a9ad004ccf5d45e534c7d503f47f643abe64b7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b5dc0163d8fd78e64a7e21f309cf932fda34353e 1a3a10b030c96ea88868ccc060a16827c01eaa5a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.3","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.3 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98019","cve":"CVE-2026-98019","epss":"0.001550000","percentile":"0.039800000","score_date":"2026-09-27","updated_at":"2026-09-28 00:02:24"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/bpf/verifier.c","tools/testing/selftests/bpf/progs/verifier_subprog_precision.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"69a9ad004ccf5d45e534c7d503f47f643abe64b7","status":"affected","version":"b5dc0163d8fd78e64a7e21f309cf932fda34353e","versionType":"git"},{"lessThan":"1a3a10b030c96ea88868ccc060a16827c01eaa5a","status":"affected","version":"b5dc0163d8fd78e64a7e21f309cf932fda34353e","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/bpf/verifier.c","tools/testing/selftests/bpf/progs/verifier_subprog_precision.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.3"},{"lessThan":"5.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc2","versionStartIncluding":"5.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: mark a NULL call argument precise\n\ncheck_func_arg() allows bpf_register_is_null() for nullable arguments\nw/o marking the underlying scalar register precise. Hence a checkpoint\ncreated on such a path would prune against arbitrary scalar value.\n\ncheck_helper_call() enforces second parameter of the\nbpf_get_local_storage() to be zero, w/o marking the underlying scalar\nregister precise. Hence a checkpoint created on such a path would\nprune against arbitrary scalar value.\n\nGrouping these two into one patch, as they share the same fixes tag."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:23:40.303Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/69a9ad004ccf5d45e534c7d503f47f643abe64b7"},{"url":"https://git.kernel.org/stable/c/1a3a10b030c96ea88868ccc060a16827c01eaa5a"}],"title":"bpf: mark a NULL call argument precise","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98019","datePublished":"2026-09-25T10:23:40.303Z","dateReserved":"2026-09-25T10:19:56.069Z","dateUpdated":"2026-09-25T10:23:40.303Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:30","lastModifiedDate":"2026-09-25 11:17:30","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98019","Ordinal":"1","Title":"bpf: mark a NULL call argument precise","CVE":"CVE-2026-98019","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98019","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: mark a NULL call argument precise\n\ncheck_func_arg() allows bpf_register_is_null() for nullable arguments\nw/o marking the underlying scalar register precise. Hence a checkpoint\ncreated on such a path would prune against arbitrary scalar value.\n\ncheck_helper_call() enforces second parameter of the\nbpf_get_local_storage() to be zero, w/o marking the underlying scalar\nregister precise. Hence a checkpoint created on such a path would\nprune against arbitrary scalar value.\n\nGrouping these two into one patch, as they share the same fixes tag.","Type":"Description","Title":"bpf: mark a NULL call argument precise"}]}}}