Joachim Priesner : ntdll: Fix read buffer overflow in find_file_in_dir().
Module: wine Branch: master Commit: e533a26dcff611f312e5bfce47061d2155476c42 URL: https://source.winehq.org/git/wine.git/?a=commit;h=e533a26dcff611f312e5bfce4... Author: Joachim Priesner <joachim.priesner(a)web.de> Date: Thu Oct 22 18:29:49 2020 +0200 ntdll: Fix read buffer overflow in find_file_in_dir(). Signed-off-by: Joachim Priesner <joachim.priesner(a)web.de> Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> --- dlls/ntdll/unix/file.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/dlls/ntdll/unix/file.c b/dlls/ntdll/unix/file.c index afb552be098..d12a3ffb119 100644 --- a/dlls/ntdll/unix/file.c +++ b/dlls/ntdll/unix/file.c @@ -2550,6 +2550,8 @@ static NTSTATUS find_file_in_dir( char *unix_name, int pos, const WCHAR *name, i goto not_found; } } + /* if that did not work, restore previous state of unix_name */ + unix_name[pos - 1] = 0; } close( fd ); }
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Alexandre Julliard