[Qemu-devel] [engineering.redhat.com #311004] two QXL issues in QEMU

2014-09-03 Thread Red Hat Product Security
Hello Gerd, Laszlo, Thank you so much for the detailed analysis and explanations, appreciate it. On Thu, 28 Aug 2014 07:57:17 GMT, kra...@redhat.com wrote: > How to go forward with this? Ok to post the patches for review in > public (aka qemu-devel)? Or do we have a CVE with embargo? Please use

[Qemu-devel] [engineering.redhat.com #311004] two QXL issues in QEMU

2014-09-03 Thread Red Hat Product Security
Hello Gerd, On Thu, 28 Aug 2014 07:57:17 GMT, kra...@redhat.com wrote: > In case the memory area happens to hit unmapped pages qemu segfaults. > => DoS > > The guest can't modify host memory though, so I don't think this can be > used by the guest to compromise the host. I was finally able to re

Re: [Qemu-devel] [engineering.redhat.com #311004] two QXL issues in QEMU

2014-09-03 Thread Gerd Hoffmann
Hi, > There is a gap in the sequence above wherein it's not clear which function is > invoked by - watch_func(...), which in turn calls > dispatcher_handle_recv_read(). (gdb) thread apply all bt Thread 2 (Thread 0x7fa703fff700 (LWP 25303)): This is the spice worker thread, reading messages /