RHEL 8 : Red Hat Virtualization (RHSA-2020:5179)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:5179 advisory. The org.ovirt.engine-root is a core component of oVirt. The following packages have been upgraded to a later upstream version: engine-db-que...

Denial Of Service (DoS)

xen is vulnerable to denial of saervice. A race condition when migrating timers between x86 HVM vCPUs allows an attacker to cause a deadlock in the application which will result in a hang or application crash...

ALPINE-CVE-2020-25604

An issue was discovered in Xen through 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 release a lock that it...

CVE-2020-25604

An issue was discovered in Xen through 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 release a lock that it...

CVE-2020-25604

An issue was discovered in Xen through 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 release a lock that it...

CVE-2020-25604

An issue was discovered in Xen through 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 release a lock that it...

CVE-2020-25604

CVE-2020-25604 in Xen up to 4.14.x describes a race condition when migrating timers between x86 HVM vCPUs. The locking model can allow a second vCPU of the same guest to release a lock it did not acquire, potentially causing a hang or crash (DoS) of the hypervisor. Affected: all Xen versions on x...

PT-2020-16121

Name of the Vulnerable Software and Affected Versions Xen versions prior to 4.14.x Description A race condition exists when migrating timers between x86 HVM vCPUs, potentially causing a hang or crash of the hypervisor, resulting in a Denial of Service DoS. The issue is specific to x86 systems and...

The Number of vCPUs Assigned To A Guest Causes VIFs To Go Offline

Increasing the number of vCPUs assigned to a VM will reduce the number of available. For instance 10 vCPUs will have 7 active VIFs but 12 vCPUs will only allow 6 active VIFs...

DEBIAN-CVE-2015-7969

Multiple memory leaks in Xen 4.0 through 4.6.x allow local guest administrators or domains with certain permission to cause a denial of service memory consumption via a large number of "teardowns" of domains with the vcpu pointer array allocated using the 1 XENDOMCTLmaxvcpus hypercall or the...

PT-2015-7682

Name of the Vulnerable Software and Affected Versions Xen versions 4.0 through 4.6.x Description The issue allows local guest administrators or domains with certain permissions to cause a denial of service due to memory consumption. This can be achieved through a large number of domain "teardowns...

xen-kernel -- leak of per-domain profiling-related vcpu pointer array

The Xen Project reports: A domain's xenoprofile state contains an array of per-vcpu information... This array is leaked on domain teardown. This memory leak could -- over time -- exhaust the host's memory. The following parties can mount a denial of service attack affecting the whole system: A...

SUSE SLED11 / SLES11 Security Update : Xen (SUSE-SU-2013:1774-1)

XEN has been updated to version 4.2.3 c/s 26170, fixing various bugs and security issues. - CVE-2013-4416: XSA-72: Fixed ocaml xenstored that mishandled oversized message replies - CVE-2013-4355: XSA-63: Fixed information leaks through I/O instruction emulation - CVE-2013-4361: XSA-66: Fixed...

Oracle Linux 7 : qemu-kvm (ELSA-2015-0349)

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2015-0349 advisory. - Resolves: bz1169456 CVE-2014-8106 qemu-kvm: qemu: cirrus: insufficient blit region checks rhel-7.1 - Resolves: bz1163078 CVE-2014-7840 qemu-kvm: qemu...

openSUSE Security Update : xen (openSUSE-2015-129)

The XEN virtualization was updated to fix bugs and security issues : Security issues fixed: CVE-2015-0361: XSA-116: xen: xen crash due to use after free on hvm guest teardown CVE-2014-9065, CVE-2014-9066: XSA-114: xen: p2m lock starvation CVE-2014-9030: XSA-113: Guest effectable page reference le...

CVE-2014-9066

Xen 4.4.x and earlier, when using a large number of VCPUs, does not properly handle read and write locks, which allows local x86 guest users to cause a denial of service write denial or NMI watchdog timeout and host crash via a large number of read requests, a different vulnerability than...

CVE-2014-9066

Xen 4.4.x and earlier, when using a large number of VCPUs, does not properly handle read and write locks, which allows local x86 guest users to cause a denial of service write denial or NMI watchdog timeout and host crash via a large number of read requests, a different vulnerability than...

CVE-2014-9066

Xen 4.4.x and earlier, when using a large number of VCPUs, does not properly handle read and write locks, which allows local x86 guest users to cause a denial of service write denial or NMI watchdog timeout and host crash via a large number of read requests, a different vulnerability than...

CVE-2014-9066

Xen 4.4.x and earlier, when using a large number of VCPUs, does not properly handle read and write locks, which allows local x86 guest users to cause a denial of service write denial or NMI watchdog timeout and host crash via a large number of read requests, a different vulnerability than...

CVE-2013-4494

Xen before 4.1.x, 4.2.x, and 4.3.x does not take the pagealloclock and granttable.lock in the same order, which allows local guest administrators with access to multiple vcpus to cause a denial of service host deadlock via unspecified vectors...