CVE-2019-19581
Fixed in a distro release EPSS <1%
An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service (out-of-bounds access) 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 32-bit Arm accesses to bitmaps with bit a count which is a multiple of 32, an out of bounds access may occur. A malicious guest may cause a hypervisor crash or hang, resulting in a Denial of Service (DoS). All versions of Xen are vulnerable. 32-bit Arm systems are vulnerable. 64-bit Arm systems are not vulnerable.
Products: xen, fedoraproject fedora
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| 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_06-3.62.1 |
| 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 HPE Helion OpenStack 8 | xen | 4.9.4_06-3.62.1 |
| 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 SP1-LTSS | xen | 4.5.5_28-22.64.1 |
| SUSE Linux Enterprise Server 12 SP2-BCL | xen | 4.7.6_06-43.59.1 |
| SUSE Linux Enterprise Server 12 SP2-LTSS | xen | 4.7.6_06-43.59.1 |
| SUSE Linux Enterprise Server 12 SP3-BCL | xen | 4.9.4_06-3.59.1 |
| SUSE Linux Enterprise Server 12 SP3-BCL | xen | 4.9.4_06-3.62.1 |
| SUSE Linux Enterprise Server 12 SP3-LTSS | xen | 4.9.4_06-3.62.1 |
| 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 SP1 | xen | 4.5.5_28-22.64.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | xen | 4.7.6_06-43.59.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | xen | 4.9.4_06-3.62.1 |
| 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 7 | xen | 4.7.6_06-43.59.1 |
| SUSE OpenStack Cloud 8 | xen | 4.9.4_06-3.62.1 |
| SUSE OpenStack Cloud 8 | xen | 4.9.4_06-3.59.1 |
| SUSE OpenStack Cloud Crowbar 8 | xen | 4.9.4_06-3.62.1 |
| 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 |