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CodeQL: the libraries and queries that power security researchers around the world, as well as code scanning in GitHub Advanced Security

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Previously, we pulled in the shared tree-sitter extractor via a `git` dependency in `Cargo.toml` to address a `rules_rust` limitation (no `path` dependencies outside of the cargo workspace)). This was a...

documentation
Ruby

**Description of the false positive** In general, the `cs/dereferenced-value-is-always-null` rule makes sense: https://lgtm.com/rules/1506094316834/ However, if a local is passed to a method by `ref`, it is possible that the method...

C#
false-positive

Re-generating the .NET runtime models revealed the very broad set of database (reader) sources. Since we are now generating models that applies to all subclasses of database reader, the issue...

C#

This is part of All for one, one for all query submission, I'm going to submit an issue in github/securitylab for this pull request too. this query will be upgraded...

C++
documentation
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DataFlow Library

I'm working on a function that returns a HTTP response from https://pypi.org/simple/ when Python's `pip` installer requests it for a package. When pushing my code onto GitHub, the CodeQL checks...

Python

Update go's copy of `ExternalFlow.qll` to bring it in line with java and csharp's. - Add support for neutral models. - Change the way that the receiver is referred to...

documentation
Go

Same as https://github.com/github/codeql/pull/16500 for Java.

C#
documentation