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5.5
CVSSv3
CVE-2020-25596
An issue exists in Xen up to and including 4.14.x. x86 PV guest kernels can experience denial of service via SYSENTER. The SYSENTER instruction leaves various state sanitization activities to software. One of Xen's sanitization paths injects a #GP fault, and incorrectly deli...
Xen Xen
Fedoraproject Fedora 31
Fedoraproject Fedora 32
Fedoraproject Fedora 33
Debian Debian Linux 10.0
Opensuse Leap 15.2
6.5
CVSSv3
CVE-2020-25597
An issue exists in Xen up to and including 4.14.x. There is mishandling of the constraint that once-valid event channels may not turn invalid. Logic in the handling of event channel operations in Xen assumes that an event channel, once valid, will not become invalid over the life...
Xen Xen
Fedoraproject Fedora 31
7
CVSSv3
CVE-2020-25599
An issue exists in Xen up to and including 4.14.x. There are evtchn_reset() race conditions. Uses of EVTCHNOP_reset (potentially by a guest on itself) or XEN_DOMCTL_soft_reset (by itself covered by XSA-77) can lead to the violation of various internal assumptions. This may lead t...
Xen Xen
Fedoraproject Fedora 31
Fedoraproject Fedora 32
Fedoraproject Fedora 33
Opensuse Leap 15.2
Debian Debian Linux 10.0
5.5
CVSSv3
CVE-2020-25600
An issue exists in Xen up to and including 4.14.x. Out of bounds event channels are available to 32-bit x86 domains. The so called 2-level event channel model imposes different limits on the number of usable event channels for 32-bit x86 domains vs 64-bit or Arm (either bitness) ...
Xen Xen
Fedoraproject Fedora 31
Fedoraproject Fedora 32
Fedoraproject Fedora 33
Opensuse Leap 15.2
Debian Debian Linux 10.0
1 Github repository
5.5
CVSSv3
CVE-2020-25601
An issue exists in Xen up to and including 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 eve...
Xen Xen
Debian Debian Linux 10.0
Fedoraproject Fedora 31
Fedoraproject Fedora 32
Fedoraproject Fedora 33
Opensuse Leap 15.2
6
CVSSv3
CVE-2020-25602
An issue exists in Xen up to and including 4.14.x. An x86 PV guest can trigger a host OS crash when handling guest access to MSR_MISC_ENABLE. When a guest accesses certain Model Specific Registers, Xen first reads the value from hardware to use as the basis for auditing the guest...
Xen Xen
Fedoraproject Fedora 31
Fedoraproject Fedora 32
Fedoraproject Fedora 33
Debian Debian Linux 10.0
Opensuse Leap 15.2
7.8
CVSSv3
CVE-2020-25603
An issue exists in Xen up to and including 4.14.x. There are missing memory barriers when accessing/allocating an event channel. Event channels control structures can be accessed lockless as long as the port is considered to be valid. Such a sequence is missing an appropriate mem...
Xen Xen
Fedoraproject Fedora 31
Fedoraproject Fedora 32
Fedoraproject Fedora 33
Opensuse Leap 15.2
Debian Debian Linux 10.0
4.7
CVSSv3
CVE-2020-25604
An issue exists in Xen up to and including 4.14.x. There is a race condition when migrating timers between x86 HVM vCPUs. When migrating timers of x86 HVM guests between its vCPUs, the locking model used allows for a second vCPU of the same guest (also operating on the timers) to...
Xen Xen
Fedoraproject Fedora 31
Fedoraproject Fedora 32
Fedoraproject Fedora 33
Debian Debian Linux 10.0
Opensuse Leap 15.2
7.8
CVSSv3
CVE-2020-25595
An issue exists in Xen up to and including 4.14.x. The PCI passthrough code improperly uses register data. Code paths in Xen's MSI handling have been identified that act on unsanitized values read back from device hardware registers. While devices strictly compliant with PCI...
Xen Xen
Fedoraproject Fedora 31
Fedoraproject Fedora 32
Fedoraproject Fedora 33
Debian Debian Linux 10.0
Opensuse Leap 15.2
6.5
CVSSv3
CVE-2020-15563
An issue exists in Xen up to and including 4.13.x, allowing x86 HVM guest OS users to cause a hypervisor crash. An inverted conditional in x86 HVM guests' dirty video RAM tracking code allows such guests to make Xen de-reference a pointer guaranteed to point at unmapped spac...
Xen Xen
Debian Debian Linux 10.0
Fedoraproject Fedora 31
Fedoraproject Fedora 32
Opensuse Leap 15.2
CVSSv3
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2020-4463
CVE-2024-29895
inject
CVE-2023-52689
CVE-2024-5049
CVE-2024-5051
privilege escalation
physical
CVE-2023-52676
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