ALPINE-CVE-2017-14318

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2017-14318
Published: 12 Sept 2017, 15:29
Last modified:03 Dec 2025, 22:37

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
3.0 (osv_alpine)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

12 Sept 2017, 15:29
Published
Vulnerability first disclosed
03 Dec 2025, 22:37
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.0•MEDIUM•Score: 6.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Affected Systems

  • alpine•xen

    < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.6.3-r9 | < 4.6.3-r11 | < 4.7.2-r2 | < 4.8.2-r1 | < 4.9.0-r4 | < 4.9.0-r4 | < 4.9.0-r4

References (1)