CVE-2016-3158
Fixed in a distro release EPSS <1%
The xrstor function in arch/x86/xstate.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.
Products: xen, fedoraproject fedora, oracle vm_server
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | xen | 4.8.0~rc3-1 |
| Debian 13 | xen | 4.8.0~rc3-1 |
| Debian 14 | xen | 4.8.0~rc3-1 |
| Debian 7 | xen | 4.1.6.lts1-1 |
| Debian 8 | xen | 4.4.1-9+deb8u5 |
| SUSE Linux Enterprise Desktop 12 SP1 | xen | 4.5.3_08-17.1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | xen | 4.2.5_21-27.1 |
| SUSE Linux Enterprise Server 11 SP2-LTSS | xen | 4.1.6_08-29.1 |
| SUSE Linux Enterprise Server 11 SP3-LTSS | xen | 4.2.5_21-27.1 |
| SUSE Linux Enterprise Server 11 SP4 | xen | 4.4.4_07-37.1 |
| SUSE Linux Enterprise Server 12 SP1 | xen | 4.5.3_08-17.1 |
| SUSE Linux Enterprise Server 12-LTSS | xen | 4.4.4_04-22.22.2 |
| SUSE Linux Enterprise Server for SAP Applications 11 SP4 | xen | 4.4.4_07-37.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 | xen | 4.4.4_04-22.22.2 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP1 | xen | 4.5.3_08-17.1 |
| SUSE Linux Enterprise Software Development Kit 11 SP4 | xen | 4.4.4_07-37.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP1 | xen | 4.5.3_08-17.1 |
| SUSE Manager 2.1 | xen | 4.2.5_21-27.1 |
| SUSE Manager Proxy 2.1 | xen | 4.2.5_21-27.1 |
| SUSE OpenStack Cloud 5 | xen | 4.2.5_21-27.1 |
| Ubuntu 14.04 LTS | xen | 4.4.2-0ubuntu0.14.04.6 |
| Ubuntu 16.04 LTS | xen | 4.6.0-1ubuntu4.1 |