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.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches
disclosure@vulncheck.com
https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac…
disclosure@vulncheck.com
https://github.com/ggml-org/llama.cpp/releases/tag/b7446
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/llama-cpp-b1886-b7445-double-free-via-llam…
disclosure@vulncheck.com