Race Condition Affecting llama.cpp package, versions <7593+dfsg-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-DEBIAN14-LLAMACPP-18582473
  • published7 Aug 2026
  • disclosed6 Aug 2026

Introduced: 6 Aug 2026

NewCVE-2026-70640  (opens in a new tab)
CWE-362  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Debian:14 llama.cpp to version 7593+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream llama.cpp package and not the llama.cpp package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1