{"id":"CVE-2026-93270","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow interpreter fallback for BPF_ADDR_PERCPU insn\n\nThe BPF_MOV64_PERCPU_REG insn requires JIT to emit native code to for\n'dst_reg = src_reg + <percpu_base_off…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow interpreter fallback for BPF_ADDR_PERCPU insn\n\nThe BPF_MOV64_PERCPU_REG insn requires JIT to emit native code to for\n'dst_reg = src_reg + <percpu_base_off…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 7bdbf7446305cb65c510c16d57cde82bc76b234a < 57cf929a33cb76be3f24886073ae820b4c496914","Linux >= 7bdbf7446305cb65c510c16d57cde82bc76b234a < 7a0855e73757ee9cf25ba635a1c735018ecba742","Linux 6.10"],"published":"2026-09-24","updated":"2026-09-24","sourceUpdated":"2026-09-24T16:17:24.020","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93270","references":[{"url":"https://git.kernel.org/stable/c/57cf929a33cb76be3f24886073ae820b4c496914","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7a0855e73757ee9cf25ba635a1c735018ecba742","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-24T16:47:15.838Z","epss":0.00176,"epssPercentile":0.06431,"slug":"CVE-2026-93270","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow interpreter fallback for BPF_ADDR_PERCPU insn\n\nThe BPF_MOV64_PERCPU_REG insn requires JIT to emit native code to for\n'dst_reg = src_reg + <percpu_base_off>'.\n\nHowever, the interpreter ignores the 'off' at its ALU64_MOV_X label.\nThe 'off' indicates the insn is BPF_MOV64_PERCPU_REG insn. Then, when\nthe interpreter loads memory from the register, it will hit a page\nfault.\n\n[    2.545572] BUG: unable to handle page fault for address: ffffffffacaaf034\n[    2.546485] #PF: supervisor read access in kernel mode\n[    2.547167] #PF: error_code(0x0000) - not-present page\n[    2.547850] PGD 134e63067 P4D 134e63067 PUD 134e64063 PMD 10021c063 PTE 800ffffeca550062\n[    2.548912] Oops: Oops: 0000 [#1] SMP PTI\n\nSet jit_required as true in order to disallow interpreter fallback in\ncore.c::__bpf_prog_select_runtime(), if any BPF_ADDR_PERCPU insn is\npatched to the prog.\n\nBTW, rename the helper bpf_map_supports_cpu_flags() to\nbpf_map_is_percpu_map().\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":[]}