CVE-2026-43622
highllama.cpp builds b1886 through b7445 contain a double free vulnerability in the LLaMA-Android JNI wrapper where new_1batch() allocates memory using malloc() wh…
Vendor / product: Ggml — llama.cpp
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.
CVSS
7.8
7.8 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-08-06 16:16
Modified: 2026-10-29 21:17
NVD status: Analyzed
Last synced 9 hours ago
Verified against the source API 2026-10-29 21:28 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
ggml / llama.cpp ≥b1886 ≤b7445
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://github.com/ggml-org/llama.cpp/releases/tag/b7446
Patch / mitigation: https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches
Patch / mitigation: https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388
Patch / mitigation: https://github.com/ggml-org/llama.cpp/releases/tag/b7446
References
- https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches disclosure@vulncheck.com
- https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388 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-llama-android-c... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-29 21:28 UTC · record ↗