What’s Vulnerable › Vulnerabilities

CVE-2026-43622: llama.cpp b1886–b7445 Double Free via llama-android.cpp

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-06 · updated 2026-10-29
• Weakness: CWE-415

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.

Affected products

• ggml-org llama.cpp: from b1886 through b7445
• ggml-org llama.cpp: from b1886 through b7445

References

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

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