From: Hervé Poussineau <hpoussin@reactos.org>
Date: Sat, 15 Jul 2017 13:28:41 +0000 (+0200)
Subject: vvfat: initialize memory after allocating it
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f80256b7eebfbe20683b3a2b2720ad9991313761;p=qemu.git

vvfat: initialize memory after allocating it

This prevents some host to guest memory content leaks.

Fixes: https://bugs.launchpad.net/qemu/+bug/1599539

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---

diff --git a/block/vvfat.c b/block/vvfat.c
index ea7775f432..6b11596abf 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -115,6 +115,7 @@ static inline int array_ensure_allocated(array_t* array, int index)
         array->pointer = g_realloc(array->pointer, new_size);
         if (!array->pointer)
             return -1;
+        memset(array->pointer + array->size, 0, new_size - array->size);
         array->size = new_size;
         array->next = index + 1;
     }