Description
The recalculate_apic_map function in arch/x86/kvm/lapic.c in the KVM subsystem in the Linux kernel through 3.12.5 allows guest OS users to cause a denial of service (host OS crash) via a crafted ICR write operation in x2apic mode.
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 | 3.12.5-1 | — |
| Debian 13 | linux | 3.12.5-1 | — |
| Debian 12 | linux | 3.12.5-1 | — |
References
- USN-2113-1 vendor-advisory
- [oss-security] 20131212 Re: [vs-plain] kvm issues mailing-list
- USN-2136-1 vendor-advisory
- https://github.com/torvalds/linux/commit/17d68b763f09a9ce824ae23eb62c9efc57b69271
- USN-2117-1 vendor-advisory
- 64319 vdb-entry
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=17d68b763f09a9ce824ae23eb62c9efc57b69271
- https://bugzilla.redhat.com/show_bug.cgi?id=1033106
- openSUSE-SU-2014:0204 vendor-advisory
- openSUSE-SU-2014:0205 vendor-advisory