CVE-2014-8369
Vulnerability Summary
Timeline
Description
The kvm_iommu_map_pages function in virt/kvm/iommu.c in the Linux kernel through 3.17.2 miscalculates the number of pages during the handling of a mapping failure, which allows guest OS users to cause a denial of service (host OS page unpinning) or possibly have unspecified other impact by leveraging guest OS privileges. NOTE: this vulnerability exists because of an incorrect fix for CVE-2014-3601.
CVSS Metrics
- v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- v2.0•MEDIUM•Score: 4.6AV:L/AC:L/Au:N/C:P/I:P/A:P
EPSS Trends
Current EPSS score: 0.08%• Percentile: 24%
Techniques & Countermeasures
- CWE-119•Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
Affected Systems
- debian•debian_linux
7.0
- linux•linux_kernel
≤ 3.17.2
- opensuse•evergreen
11.4
- suse•linux_enterprise_real_time_extension
11:sp3
- suse•suse_linux_enterprise_server
11:sp2
References (14)
- http://www.securityfocus.com/bid/70749
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
- https://lkml.org/lkml/2014/10/24/460
- http://www.debian.org/security/2014/dsa-3093
- http://secunia.com/advisories/62326
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
- http://www.openwall.com/lists/oss-security/2014/10/24/7
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3d32e4dbe71374a6780eaf51d719d76f9a9bf22f
- https://bugzilla.redhat.com/show_bug.cgi?id=1156518
- http://secunia.com/advisories/62336
- http://www.securityfocus.com/bid/70747
- https://github.com/torvalds/linux/commit/3d32e4dbe71374a6780eaf51d719d76f9a9bf22f
- http://rhn.redhat.com/errata/RHSA-2015-0674.html