https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 03 Oct 2026 06:24:18 +0000 https://cve.radiocsirt.org/vuln/certfr-2020-avi-593 certfr-2020-avi-593 https://cve.radiocsirt.org/vuln/certfr-2020-avi-593 https://cve.radiocsirt.org/vuln/cnvd-2020-53818 cnvd-2020-53818 https://cve.radiocsirt.org/vuln/cnvd-2020-53818 https://cve.radiocsirt.org/vuln/euvd-2026-45659 EUVD-2026-45659 https://cve.radiocsirt.org/vuln/euvd-2026-45659 https://cve.radiocsirt.org/vuln/fkie_cve-2020-25601 <p>An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchn_reset() / evtchn_destroy(). In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these (when resetting all event channels or when cleaning up after the guest) may take extended periods of time. So far, there was no arrangement for preemption at suitable intervals, allowing a CPU to spend an almost unbounded amount of time in the processing of these operations. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system. All Xen versions are vulnerable in principle. Whether versions 4.3 and older are vulnerable depends on underlying hardware characteristics.</p> <p>An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchn_reset() / evtchn_destroy(). In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these (when resetting all event channels or when cleaning up after the guest) may take extended periods of time. So far, there was no arrangement for preemption at suitable intervals, allowing a CPU to spend an almost unbounded amount of time in the processing of these operations. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system. All Xen versions are vulnerable in principle. Whether versions 4.3 and older are vulnerable depends on underlying hardware characteristics.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2020-25601 https://cve.radiocsirt.org/vuln/ghsa-wp5g-hhm3-443g <p>An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchn_reset() / evtchn_destroy(). In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these (when resetting all event channels or when cleaning up after the guest) may take extended periods of time. So far, there was no arrangement for preemption at suitable intervals, allowing a CPU to spend an almost unbounded amount of time in the processing of these operations. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system. All Xen versions are vulnerable in principle. Whether versions 4.3 and older are vulnerable depends on underlying hardware characteristics.</p> <p>An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchn_reset() / evtchn_destroy(). In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these (when resetting all event channels or when cleaning up after the guest) may take extended periods of time. So far, there was no arrangement for preemption at suitable intervals, allowing a CPU to spend an almost unbounded amount of time in the processing of these operations. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system. All Xen versions are vulnerable in principle. Whether versions 4.3 and older are vulnerable depends on underlying hardware characteristics.</p> https://cve.radiocsirt.org/vuln/ghsa-wp5g-hhm3-443g https://cve.radiocsirt.org/vuln/gsd-2020-25601 gsd-2020-25601 https://cve.radiocsirt.org/vuln/gsd-2020-25601 https://cve.radiocsirt.org/vuln/msrc_cve-2020-25601 msrc_CVE-2020-25601 https://cve.radiocsirt.org/vuln/msrc_cve-2020-25601 https://cve.radiocsirt.org/vuln/opensuse-su-2020:1608-1 <p>Security update for xen</p> <p>Security update for xen</p> https://cve.radiocsirt.org/vuln/opensuse-su-2020:1608-1 https://cve.radiocsirt.org/vuln/suse-su-2020:14521-1 <p>Security update for xen</p> <p>Security update for xen</p> https://cve.radiocsirt.org/vuln/suse-su-2020:14521-1 https://cve.radiocsirt.org/vuln/ubuntu-cve-2020-25601 <p><strong>Affected:</strong> Ubuntu:16.04:LTS: xen, Ubuntu:18.04:LTS: xen, Ubuntu:20.04:LTS: xen</p> <p>An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchn_reset() / evtchn_destroy(). In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these (when resetting all event channels or when cleaning up after the guest) may take extended periods of time. So far, there was no arrangement for preemption at suitable intervals, allowing a CPU to spend an almost unbounded amount of time in the processing of these operations. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system. All Xen versions are vulnerable in principle. Whether versions 4.3 and older are vulnerable depends on underlying hardware characteristics.</p> <p><strong>Affected:</strong> Ubuntu:16.04:LTS: xen, Ubuntu:18.04:LTS: xen, Ubuntu:20.04:LTS: xen</p> <p>An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchn_reset() / evtchn_destroy(). In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these (when resetting all event channels or when cleaning up after the guest) may take extended periods of time. So far, there was no arrangement for preemption at suitable intervals, allowing a CPU to spend an almost unbounded amount of time in the processing of these operations. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system. All Xen versions are vulnerable in principle. Whether versions 4.3 and older are vulnerable depends on underlying hardware characteristics.</p> https://cve.radiocsirt.org/vuln/ubuntu-cve-2020-25601