Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 3.16.2-1 | — |
| Debian 13 | linux | 3.16.2-1 | — |
| Debian 12 | linux | 3.16.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-36.63 | USN-2359-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +16 | 2.6.32-504.el6 | RHSA-2014:1392 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-44.1.3.el6uek | 0.4.3-4.el6 | ELSA-2014-3081 |
| Oracle Linux 7 | dtrace-modules-3.8.13-44.1.3.el7uek | 0.4.3-4.el7 | ELSA-2014-3081 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-44.1.3.el7uek | ELSA-2014-3081 |
Advisories 3
- RHSA-2014:1392 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-2359-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- ELSA-2014-3081 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 17, 2014
References
- https://github.com/torvalds/linux/commit/350b8bdd689cd2ab2c67c8a86a0be86cfa0751a7
- 60830 third-party-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=350b8bdd689cd2ab2c67c8a86a0be86cfa0751a7
- SUSE-SU-2015:0736 vendor-advisory
- USN-2356-1 vendor-advisory
- USN-2357-1 vendor-advisory
- SUSE-SU-2015:0481 vendor-advisory
- openSUSE-SU-2015:0566 vendor-advisory
- USN-2359-1 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1131951
- linux-kernel-cve20143601-dos(95689) vdb-entry
- USN-2358-1 vendor-advisory
- 69489 vdb-entry