VDB
CVE-2017-14318
CVE-2017-14318
PUBLISHED
CVSS 6.5 MEDIUM
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.
EPSS 0.42% · 34.4th percentile
Risk Scores
CVSS 3.0
6.5
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
EPSS Score
0.42%
34.4th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | xen | 0, 4.5.1-0ubuntu2, 4.6.0-1ubuntu1 |
Timeline
- Sep 12, 2017 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Oct 28, 2021 EPSS Score
- Dec 30, 2021 EPSS Score
- Mar 3, 2022 EPSS Score
- May 5, 2022 EPSS Score
- Jul 8, 2022 EPSS Score
- Sep 10, 2022 EPSS Score
- Nov 12, 2022 EPSS Score
- Jan 14, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2017-14318 third-party-advisory
- https://xenbits.xen.org/xsa/advisory-232.html third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2017-14318 third-party-advisory