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.
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
| Link | Tags |
|---|---|
| https://support.citrix.com/article/CTX225941 | third party advisory patch |
| http://xenbits.xen.org/xsa/advisory-228.html | patch vendor advisory |
| http://www.securityfocus.com/bid/100346 | vdb entry third party advisory |
| http://www.debian.org/security/2017/dsa-3969 | third party advisory vendor advisory |
| http://www.openwall.com/lists/oss-security/2017/08/15/3 | mailing list third party advisory patch |
| https://bugzilla.redhat.com/show_bug.cgi?id=1477651 | issue tracking third party advisory patch |
| https://security.gentoo.org/glsa/201801-14 | third party advisory vendor advisory |
| http://www.securitytracker.com/id/1039175 | vdb entry third party advisory |