cve-2017-14318
Vulnerability from cvelistv5
Published
2017-09-12 15:00
Modified
2024-08-05 19:20
Severity ?
Summary
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.
References
cve@mitre.orghttp://www.securityfocus.com/bid/100817Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securitytracker.com/id/1039349Third Party Advisory, VDB Entry
cve@mitre.orghttp://xenbits.xen.org/xsa/advisory-232.htmlPatch, Vendor Advisory
cve@mitre.orghttps://support.citrix.com/article/CTX227185
cve@mitre.orghttps://www.debian.org/security/2017/dsa-4050
Impacted products
n/an/a
Show details on NVD website

To clipboard 

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