# CVE-2017-17565: libxen-4.9: An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service (host OS crash)... CVE-2017-17565 is fixed in 20 products on 1 platform, first by libxen-4.9 4.9.2-0ubuntu1, released December 12, 2017. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2017-17565 - Priority: Routine - CVSS: n/a (Medium) - EPSS: 0.0036 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Dec 12, 2017 ## Description An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service (host OS crash) if shadow mode and log-dirty mode are in place, because of an incorrect assertion related to M2P. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libxen-4.9 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [libxen-4.9 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libxen-4.9-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | libxenstore3.0 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [libxenstore3.0 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libxenstore3.0-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-hypervisor-4.6-amd64 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-hypervisor-4.6-amd64 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-hypervisor-4.6-amd64-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-hypervisor-4.6-arm64 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-hypervisor-4.6-arm64 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-hypervisor-4.6-arm64-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-hypervisor-4.6-armhf Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-hypervisor-4.6-armhf 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-hypervisor-4.6-armhf-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-hypervisor-4.7-amd64 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-hypervisor-4.7-amd64 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-hypervisor-4.7-amd64-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-hypervisor-4.7-arm64 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-hypervisor-4.7-arm64 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-hypervisor-4.7-arm64-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-hypervisor-4.7-armhf Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-hypervisor-4.7-armhf 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-hypervisor-4.7-armhf-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-hypervisor-4.8-amd64 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-hypervisor-4.8-amd64 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-hypervisor-4.8-amd64-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-hypervisor-4.8-arm64 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-hypervisor-4.8-arm64 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-hypervisor-4.8-arm64-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-hypervisor-4.8-armhf Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-hypervisor-4.8-armhf 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-hypervisor-4.8-armhf-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-hypervisor-4.9-amd64 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-hypervisor-4.9-amd64 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-hypervisor-4.9-amd64-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-hypervisor-4.9-arm64 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-hypervisor-4.9-arm64 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-hypervisor-4.9-arm64-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-hypervisor-4.9-armhf Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-hypervisor-4.9-armhf 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-hypervisor-4.9-armhf-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-system-amd64 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-system-amd64 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-system-amd64-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-system-arm64 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-system-arm64 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-system-arm64-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-system-armhf Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-system-armhf 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-system-armhf-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-utils-4.9 Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-utils-4.9 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-utils-4.9-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xen-utils-common Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xen-utils-common 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xen-utils-common-4.9.2-0ubuntu1.md) | Dec 12, 2017 | | Linux | xenstore-utils Ubuntu 18.04.6 LTS (bionic) | 4.9.2-0ubuntu1 | [xenstore-utils 4.9.2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xenstore-utils-4.9.2-0ubuntu1.md) | Dec 12, 2017 | --- Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo