QEMU (aka Quick Emulator) built with the Virtio GPU Device emulator support is vulnerable to a memory leakage issue. It could occur while updating the cursor data in update_cursor_data_virgl. A guest user/process could use this flaw to leak host memory bytes, resulting in DoS for a host.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2016/12/05/23 | third party advisory mailing list |
| http://www.openwall.com/lists/oss-security/2016/12/05/18 | third party advisory mailing list |
| https://security.gentoo.org/glsa/201701-49 | third party advisory vendor advisory |
| https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg00029.html | mailing list patch vendor advisory |
| http://www.securityfocus.com/bid/94765 | vdb entry third party advisory |