{"id":"CVE-2026-93044","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow interpreter fallback for arena-related insns\n\nSince the interpreter does not support the arena-related insns,\ninterpreter fallback should not be allowed f…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow interpreter fallback for arena-related insns\n\nSince the interpreter does not support the arena-related insns,\ninterpreter fallback should not be allowed f…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 6082b6c328b5486da2b356eae94b8b83c98b5565 < 408b6d3bc19c4aa852ab7ee2f447756e52e69967","Linux >= 6082b6c328b5486da2b356eae94b8b83c98b5565 < 34746b5a84ec37c0ea2bf6808c65c5ed8790eb51","Linux 6.9"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:57.643","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93044","references":[{"url":"https://git.kernel.org/stable/c/34746b5a84ec37c0ea2bf6808c65c5ed8790eb51","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/408b6d3bc19c4aa852ab7ee2f447756e52e69967","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.772Z","epss":0.00155,"epssPercentile":0.05069,"slug":"CVE-2026-93044","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow interpreter fallback for arena-related insns\n\nSince the interpreter does not support the arena-related insns,\ninterpreter fallback should not be allowed for these insns in\ncore.c::__bpf_prog_select_runtime().\n\nCurrently, when the interpreter executes the arena ST/LDX/STX insns,\nit would hit the BUG_ON() in ___bpf_prog_run() at run time.\n\n[    2.579196] BPF interpreter: unknown opcode a2 (imm: 0x0)\n[    2.579998] ------------[ cut here ]------------\n[    2.580652] kernel BUG at kernel/bpf/core.c:2349!\n[    2.581314] Oops: invalid opcode: 0000 [#1] SMP PTI\n\nSet jit_required as true when arena map is used in the prog to disallow\ninterpreter fallback for arena-related insns.\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":[]}