CVE-2026-93044

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93044", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T15:57:05.658Z", "datePublished": "2026-09-17T16:10:36.285Z", "dateUpdated": "2026-10-19T09:04:39.165Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:04:39.165Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/verifier.c"], "versions": [{"version": "6082b6c328b5486da2b356eae94b8b83c98b5565", "lessThan": "408b6d3bc19c4aa852ab7ee2f447756e52e69967", "status": "affected", "versionType": "git"}, {"version": "6082b6c328b5486da2b356eae94b8b83c98b5565", "lessThan": "34746b5a84ec37c0ea2bf6808c65c5ed8790eb51", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/verifier.c"], "versions": [{"version": "6.9", "status": "affected"}, {"version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "7.3"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-93044", "lastModified": "2026-10-19T10:16:54.117", "metrics": {}, "published": "2026-09-17T17:17:57.643", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/34746b5a84ec37c0ea2bf6808c65c5ed8790eb51"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/408b6d3bc19c4aa852ab7ee2f447756e52e69967"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6082b6c328b5486da2b356eae94b8b83c98b5565,408b6d3bc19c4aa852ab7ee2f447756e52e69967)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6082b6c328b5486da2b356eae94b8b83c98b5565,34746b5a84ec37c0ea2bf6808c65c5ed8790eb51)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.9"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.9)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-19T11:45:08.253792+00:00", "updated": "2026-09-19T12:45:16.296930+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-398"]}