[3.14] gh-139283: correctly handle size limit in cursor.fetchmany() (GH-139296)
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pythonGH-139296) Passing a negative or zero size to `cursor.fetchmany()` made it fetch all rows instead of none. While this could be considered a security vulnerability, it was decided to treat this issue as a regular bug as passing a non-sanitized *size* value in the first place is not recommended. (cherry picked from commit bc172ee) Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
miss-islington
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berkerpeksag and
erlend-aasland
as code owners
This was referenced Sep 30, 2025
picnixz
approved these changes
Sep 30, 2025
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Passing a negative or zero size to
cursor.fetchmany()made it fetch all rowsinstead of none.
While this could be considered a security vulnerability, it was decided to treat
this issue as a regular bug as passing a non-sanitized size value in the first
place is not recommended.
(cherry picked from commit bc172ee)
Co-authored-by: Bénédikt Tran 10796600+picnixz@users.noreply.github.com
📚 Documentation preview 📚: https://cpython-previews--139441.org.readthedocs.build/