[Bug 52259] New: osu! sometimes crashes in select()
WineHQ Bugzilla
wine-bugs at winehq.org
Wed Dec 22 20:46:25 CST 2021
https://bugs.winehq.org/show_bug.cgi?id=52259
Bug ID: 52259
Summary: osu! sometimes crashes in select()
Product: Wine
Version: unspecified
Hardware: x86-64
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: winsock
Assignee: wine-bugs at winehq.org
Reporter: openglfreak at googlemail.com
Distribution: ---
In an osu! Discord server I'm in I've received multiple reports of osu!
crashing, with the stack trace given by the game ending in
System.Net.UnsafeNclNativeMethods.OSSOCK.select.
According to old .NET Core code the .NET Framework calls select() with manually
constructed `fd_set`s consisting of only two pointers. Since Wine always reads
the whole fd_set, if these allocations fall on the edge of the heap Wine tries
to read past the end of the heap and segfaults.
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