CVE-2026-70638 — llama.cpp b1886–b7445 Integer Overflow via new_1batch() in llama-android.cpp
llama.cpp builds b1886 through b7445 contain an integer overflow vulnerability in the LLaMA-Android JNI wrapper where the new_1batch() function multiplies sizeof(llama_seq_id) b…
Published: 2026-08-06 · CVSS: 8.5 · CVSS 4.0
llama.cpp builds b1886 through b7445 contain an integer overflow vulnerability in the LLaMA-Android JNI wrapper where the new_1batch() function multiplies sizeof(llama_seq_id) by an attacker-controlled n_seq_max parameter without overflow validation, causing heap buffer allocation to wrap and allocate insufficient memory. Attackers can exploit this by providing a crafted n_seq_max value through a malicious model file or JNI call to trigger heap corruption and achieve denial of service or arbitrary code execution on Android applications using the LLaMA-Android binding.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7