CVE catalog
CVE-2026-70640
llama.cpp builds b1886 through b7445 contain a race condition use-after-free vulnerability in the LLaMA-Android JNI wrapper where bench_1model() and free_1context() lack synchronization, allowing Thre
- Severity
- High · CVSS 7.3
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.24% · Oct 25, 2026
llama.cpp builds b1886 through b7445 contain a race condition use-after-free vulnerability in the LLaMA-Android JNI wrapper where bench_1model() and free_1context() lack synchronization, allowing Thread A to operate on freed memory while Thread B concurrently frees the llama_context. Attackers can exploit this by performing heap spray with attacker-controlled data containing a fake vtable to hijack the vtable pointer at offset +0x30, causing llama_batch_allocr::clear() to dereference arbitrary memory and achieve remote code execution.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | llama.cpp | Not reported | Not reported | unknown |
| Debian | llama.cpp | 14 | 5151+dfsg-1~exp2 | vulnerable |
| Debian | llama.cpp | 14 | 5151+dfsg-1~exp3 | vulnerable |
| Debian | llama.cpp | 14 | 5318+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 5318+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 5713+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 5760+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 5760+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 5760+dfsg-3 | vulnerable |
| Debian | llama.cpp | 14 | 5760+dfsg-4 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-3 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-3~exp1 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-3~exp2 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-3~exp3 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-4 | vulnerable |
| Debian | llama.cpp | 14 | 6641+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 6641+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 6641+dfsg-3 | vulnerable |
| Debian | llama.cpp | 14 | 7593+dfsg-1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | llama.cpp | deb | 14 | 7593+dfsg-1 | Not reported | DEBIAN-CVE-2026-70640 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches]
- [https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388]
- [https://github.com/ggml-org/llama.cpp/releases/tag/b7446]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-70640]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-70640]
- [https://www.vulncheck.com/advisories/llama-cpp-b1886-b7445-race-condition-use-after-free-via-llama-android-cpp]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]