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Key handle leaks when the audit hook fails in `winreg` · Issue #159880 · python/cpython · GitHub

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Key handle leaks when the audit hook fails in winreg #159880

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Key handle leaks when the audit hook fails in winreg#159880
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OS-windowsextension-modulesC modules in the Modules dirtype-bugAn unexpected behavior, bug, or error

Description

aisk
opened on Oct 20, 2026

Bug report

In winreg.CreateKey(), winreg.CreateKeyEx() and winreg.OpenKey(), if the audit hook raises, the already opened key handle is not closed.

CPython versions tested on:

CPython main branch

Operating systems tested on:

Windows

Linked PRs

Activity

  1. aisk
    added
    type-bugAn unexpected behavior, bug, or error
    OS-windows
    extension-modulesC modules in the Modules dir
    on Oct 20, 2026
  2. zooba
    added 3 commits that reference this issue on Oct 20, 2026

    gh-159880: Fix handle leak in winreg when audit hook returns failure (G…

    af1e030

    [3.15] gh-159880: Fix handle leak in winreg when audit hook returns f…

    e286845

    [3.14] gh-159880: Fix handle leak in winreg when audit hook returns f…

    c0ffe0f
  3. zooba
    closed this as completedon Oct 20, 2026
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