VulnerabilityModified
CVE-2016-6259
Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention (SMAP) whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service (hypervisor and VM crash) by triggering a…
MEDIUM 6.2EPSS 0.64%
Does this matter?
Lower severity and a low EPSS score (0.64%). Track it; it rarely justifies an emergency change on its own.
Description
Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention (SMAP) whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service (hypervisor and VM crash) by triggering a safety check.
- CVSS 3.0
- 6.2 MEDIUMCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.64% probability · 49th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- xen/xen · citrix/xenserver
- Source
- cve@mitre.org
References
- http://support.citrix.com/article/CTX214954Vendor Advisory
- http://www.securityfocus.com/bid/92130Third Party Advisory
- http://www.securitytracker.com/id/1036447Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-183.htmlMailing List, Patch
- http://xenbits.xen.org/xsa/xsa183-4.6.patchMitigation, Patch
- http://xenbits.xen.org/xsa/xsa183-unstable.patchMitigation, Patch
- http://support.citrix.com/article/CTX214954Vendor Advisory
- http://www.securityfocus.com/bid/92130Third Party Advisory
- http://www.securitytracker.com/id/1036447Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-183.htmlMailing List, Patch
- http://xenbits.xen.org/xsa/xsa183-4.6.patchMitigation, Patch
- http://xenbits.xen.org/xsa/xsa183-unstable.patchMitigation, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.