CVE-2026-70639llama.cpp b1886–b7445 Null Pointer Dereference DoS via llama-android.cpp

Description

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• llama.cpp b7446 Release Notes release-notesPatchRelease NotesVendor Advisory
• https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388 patchPatch
• https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches relatedPatchThird Party Advisory
• https://www.vulncheck.com/advisories/llama-cpp-b1886-b7445-null-pointer-dereference-dos-via-llama-android-cpp third-party-advisoryThird Party Advisory