CVE-2015-8338

Severity: high (CVSS 7.2 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-12-17 · updated 2026-06-17
Weakness: CWE-254

Description

Xen 4.6.x and earlier does not properly enforce limits on page order inputs for the (1) XENMEM_increase_reservation, (2) XENMEM_populate_physmap, (3) XENMEM_exchange, and possibly other HYPERVISOR_memory_op suboperations, which allows ARM guest OS administrators to cause a denial of service (CPU consumption, guest reboot, or watchdog timeout and host reboot) and possibly have unspecified other impact via unknown vectors.

Affected products

xen: through 4.6.0

References

http://www.debian.org/security/2016/dsa-3633
http://www.securityfocus.com/bid/78920
http://www.securitytracker.com/id/1034390
http://xenbits.xen.org/xsa/advisory-158.html
http://www.debian.org/security/2016/dsa-3633
http://www.securityfocus.com/bid/78920
http://www.securitytracker.com/id/1034390
http://xenbits.xen.org/xsa/advisory-158.html

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