Fetching from the wire…
Public story · 2026-08-16 · high
Build b10451 adds a bounds check so adapter files can't push llama.cpp to read memory outside them, but older pinned builds stay exposed.
Why now: The fix landed in llama.cpp's August 16 build, b10451.
llama.cpp shipped build b10451 on August 16, closing an out-of-bounds read in LoRA adapter loading. PR #27056 adds the fix. A bounds check now requires LoRA tensor data to sit inside the adapter file before the loader reads it, per the release notes. It's one check on one loading path, not a rewrite of the loader.
LoRA adapters get downloaded from model hubs constantly. Apps that embed llama.cpp for local inference load those files as inert data. Any app that let a user point at a third-party adapter was trusting a file its loader never checked before b10451.
The release notes don't say whether the fix gets backported to older release branches. Nor do they say whether triggering the read needs a malicious adapter or just a malformed one.
The fix landed only in build b10451, posted August 16 on GitHub. Teams running an older pin must update it before loading another third-party adapter.
Each link below shares sources, entities, or timing with this story.
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