CVE-2014-8369

moderate-risk
Published 2014-11-10

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.

Do I need to act?

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0.08% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (5)

Affected Vendors

Opensuse Suse Linux Debian

References (28)

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=...
Mailing List http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2015-0674.html
Broken Link http://secunia.com/advisories/62326
Broken Link http://secunia.com/advisories/62336
Third Party Advisory http://www.debian.org/security/2014/dsa-3093
Mailing List http://www.openwall.com/lists/oss-security/2014/10/24/7
Third Party Advisory http://www.securityfocus.com/bid/70747
Third Party Advisory http://www.securityfocus.com/bid/70749
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1156518
Exploit https://github.com/torvalds/linux/commit/3d32e4dbe71374a6780eaf51d719d76f9a9bf22...
Exploit https://lkml.org/lkml/2014/10/24/460
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=...
Mailing List http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2015-0674.html
Broken Link http://secunia.com/advisories/62326
and 8 more references
36
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 0/34 · Minimal
Exposure 12/34 · Low