{"api_version":"1","generated_at":"2026-10-02T21:36:48+00:00","cve":"CVE-2026-93044","urls":{"html":"https://cve.report/CVE-2026-93044","api":"https://cve.report/api/cve/CVE-2026-93044.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93044","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93044"},"summary":{"title":"bpf: Disallow interpreter fallback for arena-related insns","description":"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 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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:57","updated_at":"2026-09-17 17:17:57"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/408b6d3bc19c4aa852ab7ee2f447756e52e69967","name":"https://git.kernel.org/stable/c/408b6d3bc19c4aa852ab7ee2f447756e52e69967","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/34746b5a84ec37c0ea2bf6808c65c5ed8790eb51","name":"https://git.kernel.org/stable/c/34746b5a84ec37c0ea2bf6808c65c5ed8790eb51","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93044","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93044","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6082b6c328b5486da2b356eae94b8b83c98b5565 408b6d3bc19c4aa852ab7ee2f447756e52e69967 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6082b6c328b5486da2b356eae94b8b83c98b5565 34746b5a84ec37c0ea2bf6808c65c5ed8790eb51 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.9","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.9 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"93044","cve":"CVE-2026-93044","epss":"0.001550000","percentile":"0.050890000","score_date":"2026-09-18","updated_at":"2026-09-19 00:06:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"408b6d3bc19c4aa852ab7ee2f447756e52e69967","status":"affected","version":"6082b6c328b5486da2b356eae94b8b83c98b5565","versionType":"git"},{"lessThan":"34746b5a84ec37c0ea2bf6808c65c5ed8790eb51","status":"affected","version":"6082b6c328b5486da2b356eae94b8b83c98b5565","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.9"},{"lessThan":"6.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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 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."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:10:36.285Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/408b6d3bc19c4aa852ab7ee2f447756e52e69967"},{"url":"https://git.kernel.org/stable/c/34746b5a84ec37c0ea2bf6808c65c5ed8790eb51"}],"title":"bpf: Disallow interpreter fallback for arena-related insns","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93044","datePublished":"2026-09-17T16:10:36.285Z","dateReserved":"2026-09-17T15:57:05.658Z","dateUpdated":"2026-09-17T16:10:36.285Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:57","lastModifiedDate":"2026-09-17 17:17:57","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93044","Ordinal":"1","Title":"bpf: Disallow interpreter fallback for arena-related insns","CVE":"CVE-2026-93044","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93044","Ordinal":"1","NoteData":"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 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.","Type":"Description","Title":"bpf: Disallow interpreter fallback for arena-related insns"}]}}}