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[3.12] gh-105235: Prevent reading outside buffer during mmap.find() (GH-105252)#106708

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Merged

sweeneyde merged 1 commit intopython:3.12frommiss-islington:backport-ab86426-3.12

Jul 15, 2023

Merged

[3.12] gh-105235: Prevent reading outside buffer during mmap.find() (GH-105252)#106708

sweeneyde merged 1 commit intopython:3.12frommiss-islington:backport-ab86426-3.12

Jul 15, 2023

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miss-islington commentedJul 13, 2023•
edited by bedevere-bot
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Add a special case for s[-m:] == p in _PyBytes_Find
Add tests for _PyBytes_Find
Make sure that start <= end in mmap.find
(cherry picked from commitab86426)

Co-authored-by: Dennis Sweeney36520290+sweeneyde@users.noreply.github.com

Issue:Off-by-one memory error in a string fastsearch since 3.11 #105235

pythongh-105235: Prevent reading outside buffer during mmap.find() (p…

7807061

…ythonGH-105252)* Add a special case for s[-m:] == p in _PyBytes_Find* Add tests for _PyBytes_Find* Make sure that start <= end in mmap.find(cherry picked from commitab86426)Co-authored-by: Dennis Sweeney <36520290+sweeneyde@users.noreply.github.com>