Alexandre Julliard : ws2_32: Fix a potential buffer overflow in the Unix interface.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 74045dc812eea94a15d89871d8b3f3038fc30e48
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=74045dc812eea94a15d89871d...

Author: Alexandre Julliard 
Date:   Tue Dec  7 16:14:12 2021 +0100

ws2_32: Fix a potential buffer overflow in the Unix interface.

Signed-off-by: Alexandre Julliard

---

dlls/ws2_32/unixlib.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/ws2_32/unixlib.c b/dlls/ws2_32/unixlib.c
index 67edf06368e..5726fc31e3e 100644
--- a/dlls/ws2_32/unixlib.c
+++ b/dlls/ws2_32/unixlib.c
@@ -783,7 +783,7 @@ static int hostent_from_unix( const struct hostent *unix_host, struct WS_hostent
     unsigned int needed_size = sizeof( struct WS_hostent ), alias_count = 0, addr_count = 0, i;
     char *p;

-    needed_size += strlen( unix_host->h_name );
+    needed_size += strlen( unix_host->h_name ) + 1;

for (alias_count = 0; unix_host->h_aliases[alias_count] != NULL; ++alias_count)
         needed_size += sizeof(char *) + strlen( unix_host->h_aliases[alias_count] ) + 1;