Unrated severityNVD Advisory· Published Jan 27, 2012· Updated Jun 16, 2026
CVE-2011-4622
CVE-2011-4622
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.
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Affected products
1Patches
Vulnerability mechanics
References
8- permalink.gmane.org/gmane.comp.emulators.kvm.devel/83564nvdPatch
- lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.htmlnvd
- www.openwall.com/lists/oss-security/2011/12/21/7nvd
- www.redhat.com/support/errata/RHSA-2012-0051.htmlnvd
- www.securityfocus.com/bid/51172nvd
- www.securitytracker.com/idnvd
- bugzilla.redhat.com/show_bug.cginvd
News mentions
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