cvedb.io
CVE-2026-70640
HIGH · CVSS 7
EPSS exploitation probability: 0%
Published 2026-08-06T22:18:28.927 · Last modified 2026-08-06T22:18:28.927

Summary

llama.cpp builds b1886 through b7445 contain a race condition use-after-free vulnerability in the LLaMA-Android JNI wrapper where bench_1model() and free_1context() lack synchronization, allowing Thread A to operate on freed memory while Thread B concurrently frees the llama_context. Attackers can exploit this by performing heap spray with attacker-controlled data containing a fake vtable to hijack the vtable pointer at offset +0x30, causing llama_batch_allocr::clear() to dereference arbitrary memory and achieve remote code execution.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.