CVE-2019-19582
Fixed in a distro release EPSS <1%
An issue was discovered in Xen through 4.12.x allowing x86 guest OS users to cause a denial of service (infinite loop) because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves functions which may misbehave in certain corner cases: On x86 accesses to bitmaps with a compile time known size of 64 may incur undefined behavior, which may in particular result in infinite loops. A malicious guest may cause a hypervisor crash or hang, resulting in a Denial of Service (DoS). All versions of Xen are vulnerable. x86 systems with 64 or more nodes are vulnerable (there might not be any such systems that Xen would run on). x86 systems with less than 64 nodes are not vulnerable.
Products: xen, fedoraproject fedora
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.10 | xen | 4.12.2-r0 |
| Alpine 3.11 | xen | 4.13.0-r0 |
| Alpine 3.12 | xen | 4.13.0-r0 |
| Alpine 3.13 | xen | 4.13.0-r0 |
| Alpine 3.14 | xen | 4.13.0-r0 |
| Alpine 3.15 | xen | 4.13.0-r0 |
| Alpine 3.16 | xen | 4.13.0-r0 |
| Alpine 3.17 | xen | 4.13.0-r0 |
| Alpine 3.18 | xen | 4.13.0-r0 |
| Alpine 3.19 | xen | 4.13.0-r0 |
| Alpine 3.20 | xen | 4.13.0-r0 |
| Alpine 3.21 | xen | 4.13.0-r0 |
| Alpine 3.22 | xen | 4.13.0-r0 |
| Alpine 3.23 | xen | 4.13.0-r0 |
| Alpine 3.24 | xen | 4.13.0-r0 |
| Alpine 3.8 | xen | 4.10.4-r2 |
| Alpine 3.9 | xen | 4.11.3-r1 |
| Debian 10 | xen | 4.11.3+24-g14b62ab3e5-1~deb10u1 |
| Debian 12 | xen | 4.11.3+24-g14b62ab3e5-1 |
| Debian 13 | xen | 4.11.3+24-g14b62ab3e5-1 |
| Debian 14 | xen | 4.11.3+24-g14b62ab3e5-1 |
| Debian 9 | xen | 4.8.5.final+shim4.10.4-1+deb9u12 |
| SUSE Enterprise Storage 5 | xen | 4.9.4_06-3.59.1 |
| SUSE HPE Helion OpenStack 8 | xen | 4.9.4_06-3.59.1 |
| SUSE Linux Enterprise Desktop 12 SP4 | xen | 4.11.3_02-2.20.1 |
| SUSE Linux Enterprise Module for Basesystem 15 | xen | 4.10.4_08-3.28.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | xen | 4.12.1_06-3.9.1 |
| SUSE Linux Enterprise Module for Server Applications 15 | xen | 4.10.4_08-3.28.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP1 | xen | 4.12.1_06-3.9.1 |
| SUSE Linux Enterprise Server 12 SP3-BCL | xen | 4.9.4_06-3.59.1 |
| SUSE Linux Enterprise Server 12 SP3-LTSS | xen | 4.9.4_06-3.59.1 |
| SUSE Linux Enterprise Server 12 SP4 | xen | 4.11.3_02-2.20.1 |
| SUSE Linux Enterprise Server 12 SP5 | xen | 4.12.1_10-3.8.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | xen | 4.9.4_06-3.59.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | xen | 4.11.3_02-2.20.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | 4.12.1_10-3.8.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP4 | xen | 4.11.3_02-2.20.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | xen | 4.12.1_10-3.8.1 |
| SUSE OpenStack Cloud 8 | xen | 4.9.4_06-3.59.1 |
| SUSE OpenStack Cloud Crowbar 8 | xen | 4.9.4_06-3.59.1 |
| Ubuntu 16.04 LTS | xen | no fix |
| Ubuntu 18.04 LTS | xen | no fix |
| openSUSE Leap 15.1 | xen | 4.12.1_06-lp151.2.9.1 |