CVE-2014-3601
MEDIUM severity · CVSS 4.3 · CWE-189
4.3CVSS MEDIUM
Summary
The kvm_iommu_map_pages function in virt/kvm/iommu.c in the Linux kernel through 3.16.1 miscalculates the number of pages during the handling of a mapping failure, which allows guest OS users to (1) cause a denial of service (host OS memory corruption) or possibly have unspecified other impact by triggering a large gfn value or (2) cause a denial of service (host OS memory consumption) by triggering a small gfn value that leads to permanently pinned pages.
Impact & exploitability
Attack vectorAdjacent
Attack complexityHigh
Privileges required—
User interaction—
Confidentiality impactNone
Integrity impactNone
Availability impact—
Exploit probability (EPSS)1%
AV:A/AC:H/Au:S/C:N/I:N/A:C
Affected products we track (2)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=350b8bdd689cd2ab2c67c8a86a0be86cfa0751a7
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.htmlAdvisory
- http://secunia.com/advisories/60830
- http://www.securityfocus.com/bid/69489
- http://www.ubuntu.com/usn/USN-2356-1Advisory
- http://www.ubuntu.com/usn/USN-2357-1Advisory