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  • CPE Product Version: cpe:/o:xen:xen:4.8.1
There are 99 matching records.
Displaying matches 61 through 80.
Vuln ID Summary CVSS Severity
CVE-2017-17044

An issue was discovered in Xen through 4.9.x allowing HVM guest OS users to cause a denial of service (infinite loop and host OS hang) by leveraging the mishandling of Populate on Demand (PoD) errors.

Published: November 28, 2017; 6:29:00 PM -0500
V3.0: 6.5 MEDIUM
V2.0: 4.9 MEDIUM
CVE-2017-15597

An issue was discovered in Xen through 4.9.x. Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns out wrong. A malicious guest administrator can cause hypervisor memory corruption, most likely resulting in host crash and a Denial of Service. Privilege escalation and information leaks cannot be ruled out.

Published: October 30, 2017; 10:29:00 AM -0400
V3.0: 9.1 CRITICAL
V2.0: 9.0 HIGH
CVE-2017-15596

An issue was discovered in Xen 4.4.x through 4.9.x allowing ARM guest OS users to cause a denial of service (prevent physical CPU usage) because of lock mishandling upon detection of an add-to-physmap error.

Published: October 18, 2017; 4:29:00 AM -0400
V3.0: 6.0 MEDIUM
V2.0: 4.9 MEDIUM
CVE-2017-15595

An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (unbounded recursion, stack consumption, and hypervisor crash) or possibly gain privileges via crafted page-table stacking.

Published: October 18, 2017; 4:29:00 AM -0400
V3.0: 8.8 HIGH
V2.0: 7.2 HIGH
CVE-2017-15594

An issue was discovered in Xen through 4.9.x allowing x86 SVM PV guest OS users to cause a denial of service (hypervisor crash) or gain privileges because IDT settings are mishandled during CPU hotplugging.

Published: October 18, 2017; 4:29:00 AM -0400
V3.0: 8.8 HIGH
V2.0: 4.6 MEDIUM
CVE-2017-15593

An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (memory leak) because reference counts are mishandled.

Published: October 18, 2017; 4:29:00 AM -0400
V3.0: 6.5 MEDIUM
V2.0: 4.9 MEDIUM
CVE-2017-15592

An issue was discovered in Xen through 4.9.x allowing x86 HVM guest OS users to cause a denial of service (hypervisor crash) or possibly gain privileges because self-linear shadow mappings are mishandled for translated guests.

Published: October 18, 2017; 4:29:00 AM -0400
V3.0: 8.8 HIGH
V2.0: 7.2 HIGH
CVE-2017-15591

An issue was discovered in Xen 4.5.x through 4.9.x allowing attackers (who control a stub domain kernel or tool stack) to cause a denial of service (host OS crash) because of a missing comparison (of range start to range end) within the DMOP map/unmap implementation.

Published: October 18, 2017; 4:29:00 AM -0400
V3.0: 6.5 MEDIUM
V2.0: 4.9 MEDIUM
CVE-2015-7504

Heap-based buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU allows guest OS administrators to cause a denial of service (instance crash) or possibly execute arbitrary code via a series of packets in loopback mode.

Published: October 16, 2017; 4:29:00 PM -0400
V3.0: 8.8 HIGH
V2.0: 4.6 MEDIUM
CVE-2017-14431

Memory leak in Xen 3.3 through 4.8.x allows guest OS users to cause a denial of service (ARM or x86 AMD host OS memory consumption) by continually rebooting, because certain cleanup is skipped if no pass-through device was ever assigned, aka XSA-207.

Published: September 13, 2017; 6:29:00 PM -0400
V3.0: 5.5 MEDIUM
V2.0: 4.9 MEDIUM
CVE-2017-14319

A grant unmapping issue was discovered in Xen through 4.9.x. When removing or replacing a grant mapping, the x86 PV specific path needs to make sure page table entries remain in sync with other accounting done. Although the identity of the page frame was validated correctly, neither the presence of the mapping nor page writability were taken into account.

Published: September 12, 2017; 11:29:00 AM -0400
V3.0: 8.8 HIGH
V2.0: 7.2 HIGH
CVE-2017-14318

An issue was discovered in Xen 4.5.x through 4.9.x. The function `__gnttab_cache_flush` handles GNTTABOP_cache_flush grant table operations. It checks to see if the calling domain is the owner of the page that is to be operated on. If it is not, the owner's grant table is checked to see if a grant mapping to the calling domain exists for the page in question. However, the function does not check to see if the owning domain actually has a grant table or not. Some special domains, such as `DOMID_XEN`, `DOMID_IO` and `DOMID_COW` are created without grant tables. Hence, if __gnttab_cache_flush operates on a page owned by these special domains, it will attempt to dereference a NULL pointer in the domain struct.

Published: September 12, 2017; 11:29:00 AM -0400
V3.0: 6.5 MEDIUM
V2.0: 4.9 MEDIUM
CVE-2017-14317

A domain cleanup issue was discovered in the C xenstore daemon (aka cxenstored) in Xen through 4.9.x. When shutting down a VM with a stubdomain, a race in cxenstored may cause a double-free. The xenstored daemon may crash, resulting in a DoS of any parts of the system relying on it (including domain creation / destruction, ballooning, device changes, etc.).

Published: September 12, 2017; 11:29:00 AM -0400
V3.0: 5.6 MEDIUM
V2.0: 4.7 MEDIUM
CVE-2017-14316

A parameter verification issue was discovered in Xen through 4.9.x. The function `alloc_heap_pages` allows callers to specify the first NUMA node that should be used for allocations through the `memflags` parameter; the node is extracted using the `MEMF_get_node` macro. While the function checks to see if the special constant `NUMA_NO_NODE` is specified, it otherwise does not handle the case where `node >= MAX_NUMNODES`. This allows an out-of-bounds access to an internal array.

Published: September 12, 2017; 11:29:00 AM -0400
V3.0: 8.8 HIGH
V2.0: 7.2 HIGH
CVE-2017-12137

arch/x86/mm.c in Xen allows local PV guest OS users to gain host OS privileges via vectors related to map_grant_ref.

Published: August 24, 2017; 10:29:00 AM -0400
V3.0: 8.8 HIGH
V2.0: 7.2 HIGH
CVE-2017-12136

Race condition in the grant table code in Xen 4.6.x through 4.9.x allows local guest OS administrators to cause a denial of service (free list corruption and host crash) or gain privileges on the host via vectors involving maptrack free list handling.

Published: August 24, 2017; 10:29:00 AM -0400
V3.0: 7.8 HIGH
V2.0: 6.9 MEDIUM
CVE-2017-12135

Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving transitive grants.

Published: August 24, 2017; 10:29:00 AM -0400
V3.0: 8.8 HIGH
V2.0: 4.6 MEDIUM
CVE-2017-12134

The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability calculation.

Published: August 24, 2017; 10:29:00 AM -0400
V3.0: 8.8 HIGH
V2.0: 7.2 HIGH
CVE-2017-12855

Xen maintains the _GTF_{read,writ}ing bits as appropriate, to inform the guest that a grant is in use. A guest is expected not to modify the grant details while it is in use, whereas the guest is free to modify/reuse the grant entry when it is not in use. Under some circumstances, Xen will clear the status bits too early, incorrectly informing the guest that the grant is no longer in use. A guest may prematurely believe that a granted frame is safely private again, and reuse it in a way which contains sensitive information, while the domain on the far end of the grant is still using the grant. Xen 4.9, 4.8, 4.7, 4.6, and 4.5 are affected.

Published: August 15, 2017; 12:29:00 PM -0400
V3.0: 6.5 MEDIUM
V2.0: 2.1 LOW
CVE-2017-10923

Xen through 4.8.x does not validate a vCPU array index upon the sending of an SGI, which allows guest OS users to cause a denial of service (hypervisor crash), aka XSA-225.

Published: July 04, 2017; 9:29:00 PM -0400
V3.0: 6.5 MEDIUM
V2.0: 5.0 MEDIUM