https://lists.ubuntu.com/archives/kernel-team/2018-August/095103.html
** Description changed:
+
+ == SRU Justification ==
+ IBM is requesting commit 76fa4975f3ed in powerpc as a security fix.
+ This commit Fixes: 121f80ba68f1. Commit 76fa4975f3ed also requires
+ mainline commit 1463edca6734 as a prereq.
+
+ Both these commits have already been cc'd to upstream stable, but they
+ have not landed in Bionic as of yet.
+
+ == Fixes ==
+ 1463edca6734 ("vfio/spapr: Use IOMMU pageshift rather than pagesize")
+ 76fa4975f3ed ("KVM: PPC: Check if IOMMU page is contained in the pinned
physical page")
+
+ == Regression Potential ==
+ Low. These commits have also been sent to upstream stable, so have had
+ additional upstream review.
+
+ == Test Case ==
+ A test kernel was built with these patches and tested by the original bug
reporter.
+ The bug reporter states the test kernel resolved the bug.
+
+
+
+
== Comment: #0 - Leonardo Augusto Guimaraes Garcia - 2018-08-06
12:27:59 ==
Please, add the following security fix to the distro kernel:
76fa4975f3ed KVM: PPC: Check if IOMMU page is contained in the pinned
physical page
Also already available in the 4.14 stable tree:
58113603a4ea KVM: PPC: Check if IOMMU page is contained in the pinned
physical page
And in the 4.17 stable tree:
970e28cb2c7a KVM: PPC: Check if IOMMU page is contained in the pinned
physical page
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https://bugs.launchpad.net/bugs/1785675
Title:
Security fix: check if IOMMU page is contained in the pinned physical
page
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