{"id":"CVE-2026-98048","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: don't rewrite bpf_fastcall patterns entered by a jump\n\nmark_fastcall_pattern_for_call() must ensure that matched\n\"spill; call; fill\" instruction series is not inte…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: don't rewrite bpf_fastcall patterns entered by a jump\n\nmark_fastcall_pattern_for_call() must ensure that matched\n\"spill; call; fill\" instruction series is not inte…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 5b5f51bff1b66cedb62b5ba74a1878341204e057 < 24adbc2c3bbe3385ce922587e1f8e837a68b3e25","Linux >= 5b5f51bff1b66cedb62b5ba74a1878341204e057 < 0b1c83dc3c4401cd7e846548f62e3caf3d06742e","Linux 6.12"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:33.663","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98048","references":[{"url":"https://git.kernel.org/stable/c/0b1c83dc3c4401cd7e846548f62e3caf3d06742e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/24adbc2c3bbe3385ce922587e1f8e837a68b3e25","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-25T11:06:38.847Z","slug":"CVE-2026-98048","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf: don't rewrite bpf_fastcall patterns entered by a jump\n\nmark_fastcall_pattern_for_call() must ensure that matched\n\"spill; call; fill\" instruction series is not interrupted by a jump.\nOtherwise the rewrite applied by bpf_remove_fastcall_spills_fills()\nis not sound.\n\nRecord the instructions targeted by jumps in\ninsn_aux_data[*].jump_target when the CFG is built and use this flag\nto stop growing a pattern at such an instruction. Jumps to the first\nspill are fine.\n\nNote that existing insn_aux_data[*].jmp_point field can't be reused,\nas it marks subprogram return instructions.\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":[]}