{"id":"UBUNTU-CVE-2024-45817","details":"In x86's APIC (Advanced Programmable Interrupt Controller) architecture, error conditions are reported in a status register.  Furthermore, the OS can opt to receive an interrupt when a new error occurs. It is possible to configure the error interrupt with an illegal vector, which generates an error when an error interrupt is raised. This case causes Xen to recurse through vlapic_error().  The recursion itself is bounded; errors accumulate in the the status register and only generate an interrupt when a new status bit becomes set. However, the lock protecting this state in Xen will try to be taken recursively, and deadlock.","modified":"2026-01-20T18:24:05.140340Z","published":"2024-09-25T11:15:00Z","upstream":["CVE-2024-45817"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-45817"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2024-45817"},{"type":"REPORT","url":"https://xenbits.xen.org/xsa/advisory-462.html"}],"affected":[{"package":{"name":"xen","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/xen@4.6.5-0ubuntu1.4?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.1-0ubuntu1","4.5.1-0ubuntu2","4.6.0-1ubuntu1","4.6.0-1ubuntu2","4.6.0-1ubuntu4","4.6.0-1ubuntu4.1","4.6.0-1ubuntu4.2","4.6.0-1ubuntu4.3","4.6.5-0ubuntu1","4.6.5-0ubuntu1.1","4.6.5-0ubuntu1.2","4.6.5-0ubuntu1.4"],"ecosystem_specific":{"binaries":[{"binary_name":"libxen-4.6","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"libxen-dev","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"libxenstore3.0","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-hypervisor-4.4-amd64","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-hypervisor-4.4-arm64","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-hypervisor-4.4-armhf","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-hypervisor-4.5-amd64","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-hypervisor-4.5-arm64","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-hypervisor-4.5-armhf","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-hypervisor-4.6-amd64","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-hypervisor-4.6-arm64","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-hypervisor-4.6-armhf","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-system-amd64","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-system-arm64","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-system-armhf","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-utils-4.6","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xen-utils-common","binary_version":"4.6.5-0ubuntu1.4"},{"binary_name":"xenstore-utils","binary_version":"4.6.5-0ubuntu1.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-45817.json"}},{"package":{"name":"xen","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/xen@4.9.2-0ubuntu1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.9.0-0ubuntu3","4.9.0-0ubuntu4","4.9.2-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"libxen-4.9","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"libxen-dev","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"libxenstore3.0","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-hypervisor-4.6-amd64","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-hypervisor-4.6-arm64","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-hypervisor-4.6-armhf","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-hypervisor-4.7-amd64","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-hypervisor-4.7-arm64","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-hypervisor-4.7-armhf","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-hypervisor-4.8-amd64","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-hypervisor-4.8-arm64","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-hypervisor-4.8-armhf","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-hypervisor-4.9-amd64","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-hypervisor-4.9-arm64","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-hypervisor-4.9-armhf","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-system-amd64","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-system-arm64","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-system-armhf","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-utils-4.9","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xen-utils-common","binary_version":"4.9.2-0ubuntu1"},{"binary_name":"xenstore-utils","binary_version":"4.9.2-0ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-45817.json"}},{"package":{"name":"xen","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/xen@4.11.3+24-g14b62ab3e5-1ubuntu2.3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.9.2-0ubuntu2","4.9.2-0ubuntu6","4.9.2-0ubuntu7","4.11.3+24-g14b62ab3e5-1ubuntu1","4.11.3+24-g14b62ab3e5-1ubuntu2","4.11.3+24-g14b62ab3e5-1ubuntu2.2","4.11.3+24-g14b62ab3e5-1ubuntu2.3"],"ecosystem_specific":{"binaries":[{"binary_name":"libxen-dev","binary_version":"4.11.3+24-g14b62ab3e5-1ubuntu2.3"},{"binary_name":"libxencall1","binary_version":"4.11.3+24-g14b62ab3e5-1ubuntu2.3"},{"binary_name":"libxendevicemodel1","binary_version":"4.11.3+24-g14b62ab3e5-1ubuntu2.3"},{"binary_name":"libxenevtchn1","binary_version":"4.11.3+24-g14b62ab3e5-1ubun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