detecting-memory-safety-bugs SKILL.md skillA
detecting-memory-safety-bugs from unboundcompute/security-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add unboundcompute/security-agent-skills/detecting-memory-safety-bugs@git:20260816.faa9c07Pins git:20260816.faa9c07 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- unboundcompute/security-agent-skills
- Path
skills/detecting-memory-safety-bugs/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260816.faa9c07, committed Aug 16, 2026
- Size
- 5,924 bytes
- Repository stars
- 26
- License
- MIT
Find memory-safety bugs in C/C++ and other unmanaged code - use-after-free, double-free, out-of-bounds read/write, uninitialized use, and NULL deref - by reasoning about object lifetime and buffer bounds along real code paths. Use on an authorized source target when a candidate catalog does NOT model these temporal/lifetime classes (most don't), so a keyword or sink scan will miss them; when reviewing allocators, parsers, buffer handling, or refcounting. Pairs the lifetime/bounds reasoning…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Detecting memory-safety bugs Temporal and spatial memory bugs are the ones a sink-based catalog usually *doesn't* model: there's no single "dangerous function" to grep - the bug is a relationship between a pointer's lifetime and its use, or between an index and a bound, spread across code paths. So you hunt them by reasoning about lifetime and bounds, not by matching a call. This skill covers the five workhorse classes and how to confirm each. ## When to use - The target is C/C++/Rust-unsafe/CGo or any unmanaged memory, and you want the classes a catalog leaves out (`hunting-bugs-with-a-code-graph` flags these as out-of-catalog and sends you here). - You're reviewing allocators, parsers, serializers, ring buffers, refcounting, or anything doing pointer arithmetic. ## Scope check Authorized source only. If you can't name the authorization, stop. ## The five classes and how to confirm each For every candidate, the confirmation is a *path*: an allocation/definition site, the operation that changes its state, and the use - read the source at each. 1. **Use-after-free (UAF).** A pointer is used after its object is freed. Hunt: …
Read the whole file at its exact version.
How to install
mdr add unboundcompute/security-agent-skills/detecting-memory-safety-bugs@sha256:20a3447e01f84d4aThe line at the top of this page pins the label git:20260816.faa9c07, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_udjqgvsqkotxdgbj)
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Versions
The registry has recorded 1 version of this file, committed on Aug 16, 2026.
Audit of the latest version
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- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
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Source
unboundcompute/security-agent-skills · 26 stars · license MIT · pushed 2026-09-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_udjqgvsqkotxdgbj GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/detecting-memory-safety-bugs GET https://markdownregistry.com/api/v1/blob/20a3447e01f84d4a7a7eabf942f16f218743f285ed7ff0cfe6a45790a0c1f50b
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.