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CVE-2011-4622
Published: Jan 27, 2012
Modified: Aug 7, 2024
PUBLISHED
Description
The create_pit_timer function in arch/x86/kvm/i8254.c in KVM 83, and possibly other versions, does not properly handle when Programmable Interval Timer (PIT) interrupt requests (IRQs) when a virtual interrupt controller (irqchip) is not available, which allows local users to cause a denial of service (NULL pointer dereference) by starting a timer.
| Vendor | Product | Versions |
|---|---|---|
n/a | n/a | affected n/a |
References
RHSA-2012:0051
vendor-advisory
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=769721
x_refsource_CONFIRM
51172
vdb-entry
x_refsource_BID
[oss-security] 20111221 Re: kernel: kvm: pit timer with no irqchip crashes the system
mailing-list
x_refsource_MLIST
[kvm] 20111214 [PATCH 1/2] KVM: x86: Prevent starting PIT timers in the absence of irqchip support
mailing-list
x_refsource_MLIST
SUSE-SU-2012:0616
vendor-advisory
x_refsource_SUSE
openSUSE-SU-2013:0925
vendor-advisory
x_refsource_SUSE
1026559
vdb-entry
x_refsource_SECTRACK
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