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C API functions like PyErr_SetFromErrnoWithFilename() can use incorrect error code #107916

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serhiy-storchaka opened this issue Aug 13, 2023 · 0 comments · Fixed by #108205
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3.11 only security fixes 3.12 bugs and security fixes 3.13 bugs and security fixes topic-C-API type-bug An unexpected behavior, bug, or error

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serhiy-storchaka commented Aug 13, 2023

Calling PyUnicode_DecodeFSDefault() in C API functions PyErr_SetFromErrnoWithFilename(), PyErr_SetExcFromWindowsErrWithFilename() and PyErr_SetFromWindowsErrWithFilename() can modify the value of errno or the result of GetLastError() which are used in these functions.

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@serhiy-storchaka serhiy-storchaka added type-bug An unexpected behavior, bug, or error 3.11 only security fixes topic-C-API 3.12 bugs and security fixes 3.13 bugs and security fixes labels Aug 13, 2023
@serhiy-storchaka serhiy-storchaka self-assigned this Aug 13, 2023
serhiy-storchaka added a commit to serhiy-storchaka/cpython that referenced this issue Aug 14, 2023
serhiy-storchaka added a commit to serhiy-storchaka/cpython that referenced this issue Aug 19, 2023
serhiy-storchaka added a commit that referenced this issue Aug 21, 2023
miss-islington pushed a commit to miss-islington/cpython that referenced this issue Aug 21, 2023
…PyErr_SetFromErrnoWithFilename() etc (pythonGH-107929)

(cherry picked from commit 80bdebd)

Co-authored-by: Serhiy Storchaka <[email protected]>
miss-islington pushed a commit to miss-islington/cpython that referenced this issue Aug 21, 2023
…PyErr_SetFromErrnoWithFilename() etc (pythonGH-107929)

(cherry picked from commit 80bdebd)

Co-authored-by: Serhiy Storchaka <[email protected]>
serhiy-storchaka added a commit that referenced this issue Aug 21, 2023
… PyErr_SetFromErrnoWithFilename() etc (GH-107929) (GH-108206)

(cherry picked from commit 80bdebd)

Co-authored-by: Serhiy Storchaka <[email protected]>
Aug 21, 2023
… PyErr_SetFromErrnoWithFilename() etc (GH-107929) (#108205)

gh-107916: Save the error code before decoding the filename in PyErr_SetFromErrnoWithFilename() etc (GH-107929)
(cherry picked from commit 80bdebd)

Co-authored-by: Serhiy Storchaka <[email protected]>
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Labels
3.11 only security fixes 3.12 bugs and security fixes 3.13 bugs and security fixes topic-C-API type-bug An unexpected behavior, bug, or error
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