Threats Tagged 'cve-2026-53671'
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Threats Tagged 'cve-2026-53671'
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CVE-2026-53671: CWE-682: Incorrect Calculation in vbpf prevailCVE-2026-53671 0 PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, the abstract transformer in prevail treats writes through a T_CTX-typed base register as a silent no-op: do_mem_store in src/crab/ebpf_transformer.cpp only models T_STACK stores, and the checker's T_CTX bounds arm never tests AccessType::write. An attacker can craft an eBPF program that overwrites a context field (e.g., ctx->data), reload that field typed as T_PACKET, and dereference an attacker-controlled address — and prevail will report the program as safe. This issue has been patched in version 0.2.4. Join the discussion | CVE Database V5 | 09/02/2026, 17:54:30 UTC Added: 09/02/2026, 18:08:54 UTC |
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