[Qemu-devel] [PATCH 1.1] vnc: fix segfault in vnc_display_pw_expire()

[Gerd Hoffmann]

NULL pointer dereference in case no vnc server is configured.
Catch this and return -EINVAL like vnc_display_password() does.

Signed-off-by: Gerd Hoffmann <address@hidden>
---
 ui/vnc.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/ui/vnc.c b/ui/vnc.c
index deb9ecd..4408110 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -2849,6 +2849,10 @@ int vnc_display_pw_expire(DisplayState *ds, time_t 
expires)
 {
     VncDisplay *vs = ds ? (VncDisplay *)ds->opaque : vnc_display;
 
+    if (!vs) {
+        return -EINVAL;
+    }
+
     vs->expires = expires;
     return 0;
 }
-- 
1.7.1