CVE WatchAug 6, 2026

CVE-2026-70640

llama.cpp builds b1886 through b7445 contain a race condition use-after-free vulnerability in the LLaMA-Android JNI wrapper where bench_1mod

CVSS

7.0

High

EPSS

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KEV

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Exploit Today

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0-100

Published: Aug 6, 2026 · Last modified: Aug 6, 2026 · CWE-362 · CWE-476

EPSS · 30d

Not enough EPSS history yet.

Technical description

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.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

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