izzy/xemu
0
0
Fork 0
mirror of https://github.com/izzy2lost/xemu.git synced 2026-07-06 00:20:22 -07:00
Code Issues Packages Projects Releases Wiki Activity

vnc: fix use-after-free

Browse Source 
When vnc_client_read() return value is -1
vs is not valid any more.

Fixes: d49b87f0d1
Reported-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180420084820.3873-1-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann
2018-04-27 09:51:23 +02:00
parent b8846a4d63
commit 1bc3117aba
1 changed files with 3 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
ui/vnc.c
+3 -2
View File
@@ -1539,13 +1539,14 @@ gboolean vnc_client_io(QIOChannel *ioc G_GNUC_UNUSED,
VncState *vs = opaque;
if (condition & G_IO_IN) {
if (vnc_client_read(vs) < 0) {
goto end;
/* vs is free()ed here */
return TRUE;
}
}
if (condition & G_IO_OUT) {
vnc_client_write(vs);
}
end:
if (vs->disconnecting) {
if (vs->ioc_tag != 0) {
g_source_remove(vs->ioc_tag);