CVE-2026-70639

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-70639
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 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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches Patch Third Party Advisory
https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388 Patch
https://github.com/ggml-org/llama.cpp/releases/tag/b7446 Patch Release Notes Vendor Advisory
https://www.vulncheck.com/advisories/llama-cpp-b1886-b7445-null-pointer-dereference-dos-via-llama-android-cpp Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:ggml:llama.cpp:*:*:*:*:*:*:*:*
History

23 Oct 2026, 21:10

Type Values Removed Values Added
Summary
  • (es) Las compilaciones de llama.cpp b1886 a b7445 contienen una vulnerabilidad de desreferencia de puntero nulo en el envoltorio JNI de LLaMA-Android donde la función bench_1model() no valida el puntero de contexto del modelo antes de desreferenciarlo. Los atacantes pueden suministrar un archivo de modelo malicioso, corrupto o truncado para activar una condición de contexto nulo, causando un fallo SIGSEGV que termina el proceso de la aplicación de Android y resulta en denegación de servicio.

21 Sep 2026, 18:10

Type Values Removed Values Added
First Time Ggml
Ggml llama.cpp
CPE cpe:2.3:a:ggml:llama.cpp:*:*:*:*:*:*:*:*
References () https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches - () https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches - Patch, Third Party Advisory
References () https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388 - () https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388 - Patch
References () https://github.com/ggml-org/llama.cpp/releases/tag/b7446 - () https://github.com/ggml-org/llama.cpp/releases/tag/b7446 - Patch, Release Notes, Vendor Advisory
References () https://www.vulncheck.com/advisories/llama-cpp-b1886-b7445-null-pointer-dereference-dos-via-llama-android-cpp - () https://www.vulncheck.com/advisories/llama-cpp-b1886-b7445-null-pointer-dereference-dos-via-llama-android-cpp - Third Party Advisory
Information

Published : 2026-08-06 22:18

Updated : 2026-10-29 21:17

NVD link : CVE-2026-70639

Mitre link : CVE-2026-70639

CVE.ORG link : CVE-2026-70639

JSON object : View

Products Affected

ggml

  • llama.cpp
CWE
CWE-476

NULL Pointer Dereference