CVE-2026-43622

llama.cpp b1886–b7445 Double Free via llama-android.cpp

Description

llama.cpp builds b1886 through b7445 contain a double free vulnerability in the LLaMA-Android JNI wrapper where new_1batch() allocates memory using malloc() while free_1batch() deallocates it using the C++ delete operator, causing heap metadata corruption. Attackers can trigger this memory management mismatch to cause denial of service through process crashes or potentially achieve arbitrary code execution depending on allocator state.

Scores

Faiblesses (CWE)

• CWE-762
• CWE-415

Références européennes

• ENISA EUVD · EUVD-2026-54096
• GCVE · GCVE-0-2026-43622

Configurations affectées (CPE NVD)

• cpe:2.3:a:ggml:llama.cpp:*:*:*:*:*:*:*:* ≥ b1886 ≤ b7445

Produits affectés

Références

• https://github.com/ggml-org/llama.cpp/releases/tag/b7446
• https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388
• https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches
• https://www.vulncheck.com/advisories/llama-cpp-b1886-b7445-double-free-via-llama-android-cpp

Sources