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CVE-2026-43622

CVE-2026-43622 · llama.cpp b1886–b7445 Double Free via llama-android.cpp

This page contains facts from public vulnerability sources. Check the original advisory before updating.

llama.cpp builds b1886 through b7445 contain a double free vulnerability in the LLaMA-Android JNI wrapper where new_1batch() allocates memory using malloc() while free_1batch() deallocates it using the C++ delete operator, causing heap metadata corruption. Attackers can trigger this memory management mismatch to cause denial of service through process crashes or potentially achieve arbitrary code execution depending on allocator state.

CVSS 8.5 · High · EPSS 0.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • llama.cpp

    Versions
    • ≥ b1886, ≤ b7445: Affected (custom)
    • ≥ 0.9.0, ≤ 0.17.1: Affected (semver)
    • 5c0d18881e0e9794c96b2602736b758bac9d9388: Not affected (git)

    No fix published

  • llama.cpp Debian:14

    Versions
    • 5151+dfsg-1~exp2
    • 5151+dfsg-1~exp3
    • 5318+dfsg-1
    • 5318+dfsg-2
    • 5713+dfsg-1
    • 5760+dfsg-1
    • 5760+dfsg-2
    • 5760+dfsg-3
    • 5760+dfsg-4
    • 5882+dfsg-1
    • 5882+dfsg-2
    • 5882+dfsg-3
    • 5882+dfsg-3~exp1
    • 5882+dfsg-3~exp2
    • 5882+dfsg-3~exp3
    • 5882+dfsg-4
    • 6641+dfsg-1
    • 6641+dfsg-2
    • 6641+dfsg-3
    Affected ranges
    • ECOSYSTEM: < 7593+dfsg-1

    Update to 7593+dfsg-1

Original sources

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