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[PULL,v2,28/51] qemu-char: avoid potential double-free

Message ID 1458053975-2410-29-git-send-email-mst@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Michael S. Tsirkin March 15, 2016, 3:01 p.m. UTC 
From: Marc-André Lureau <marcandre.lureau@redhat.com>

If tcp_set_msgfds() is called several time with NULL fds, this
could lead to double-free.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 qemu-char.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox

Patch

diff --git a/qemu-char.c b/qemu-char.c
index e0147f3..fc4611d 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -2697,6 +2697,7 @@  static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
     }
     /* clear old pending fd array */
     g_free(s->write_msgfds);
+    s->write_msgfds = NULL;
 
     if (num) {
         s->write_msgfds = g_new(int, num);