{"id":"CVE-2026-70639","title":"llama.cpp builds b1886 through b7445 contain a null pointer dereference vulnerability in the LLaMA-Android JNI wrapper where the bench_1model() function fails to validate the model context pointer before dereferencing it","summary":"llama.cpp builds b1886 through b7445 contain a null pointer dereference vulnerability in the LLaMA-Android JNI wrapper where the bench_1model() function fails to validate the model context pointer before dereferencing it. Attackers can s…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"ggml","product":"llama.cpp","affected":["llama.cpp >= b1886, <= b7445"],"published":"2026-08-06","updated":"2026-09-21","sourceUpdated":"2026-09-21T18:10:56.197","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-70639","references":[{"url":"https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches","label":"disclosure@vulncheck.com"},{"url":"https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388","label":"disclosure@vulncheck.com"},{"url":"https://github.com/ggml-org/llama.cpp/releases/tag/b7446","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/llama-cpp-b1886-b7445-null-pointer-dereference-dos-via-llama-android-cpp","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.0013,"epssPercentile":0.02984,"ingestedAt":"2026-09-21T18:50:57.547Z","slug":"CVE-2026-70639","body":"## Overview\n\nllama.cpp builds b1886 through b7445 contain a null pointer dereference vulnerability in the LLaMA-Android JNI wrapper where the bench_1model() function fails to validate the model context pointer before dereferencing it. Attackers can supply a malicious, corrupt, or truncated model file to trigger a null context condition, causing a SIGSEGV crash that terminates the Android application process and results in denial of service.\n\n## Affected\n\n- `llama.cpp >= b1886, <= b7445`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}