{"id":"CVE-2026-98019","title":"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","summary":"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 …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= b5dc0163d8fd78e64a7e21f309cf932fda34353e < 69a9ad004ccf5d45e534c7d503f47f643abe64b7","Linux >= b5dc0163d8fd78e64a7e21f309cf932fda34353e < 1a3a10b030c96ea88868ccc060a16827c01eaa5a","Linux 5.3"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:30.363","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98019","references":[{"url":"https://git.kernel.org/stable/c/1a3a10b030c96ea88868ccc060a16827c01eaa5a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/69a9ad004ccf5d45e534c7d503f47f643abe64b7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-25T11:06:38.856Z","slug":"CVE-2026-98019","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}