CVE-2017-14319

Priority
Medium
Description
A grant unmapping issue was discovered in Xen through 4.9.x. When removing
or replacing a grant mapping, the x86 PV specific path needs to make sure
page table entries remain in sync with other accounting done. Although the
identity of the page frame was validated correctly, neither the presence of
the mapping nor page writability were taken into account.
References
Package
Source: xen (LP Ubuntu Debian)
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):released (4.4.2-0ubuntu0.14.04.14)
Ubuntu 16.04 LTS (Xenial Xerus):released (4.6.5-0ubuntu1.4)
Ubuntu 17.10 (Artful Aardvark):released (4.9.0-0ubuntu3)
More Information

Updated: 2018-06-26 05:01:59 UTC (commit 7799c934cca373482531a7b00e4dfe82302ceae5)