Piotr Caban : msvcrt: Fix buffer overflow in _get_tzname.
Alexandre Julliard
julliard at winehq.org
Wed May 15 14:32:21 CDT 2019
Module: wine
Branch: stable
Commit: b26f35d9ef891da33ab0486d33b151dba106f1ea
URL: https://source.winehq.org/git/wine.git/?a=commit;h=b26f35d9ef891da33ab0486d33b151dba106f1ea
Author: Piotr Caban <piotr at codeweavers.com>
Date: Wed Feb 27 18:37:10 2019 +0100
msvcrt: Fix buffer overflow in _get_tzname.
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=46481
Signed-off-by: Piotr Caban <piotr at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
(cherry picked from commit 79188582f067b16e3aaebfad4a853d84f3a310cc)
Signed-off-by: Michael Stefaniuc <mstefani at winehq.org>
---
dlls/msvcrt/time.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/dlls/msvcrt/time.c b/dlls/msvcrt/time.c
index 14f4ba0..e6493b0 100644
--- a/dlls/msvcrt/time.c
+++ b/dlls/msvcrt/time.c
@@ -939,6 +939,11 @@ int CDECL MSVCRT__get_tzname(MSVCRT_size_t *ret, char *buf, MSVCRT_size_t bufsiz
*ret = strlen(timezone)+1;
if(!buf && !bufsize)
return 0;
+ if(*ret > bufsize)
+ {
+ buf[0] = 0;
+ return MSVCRT_ERANGE;
+ }
strcpy(buf, timezone);
return 0;
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