Unscored severity · published Jan 27, 2012
CVE-2011-4622
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…
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CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KV
Kvm · Redhat
83 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2011-4622
CVE.org
https://www.cve.org/CVERecord?id=CVE-2011-4622
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
Patch
http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/83564
www.openwall.com
http://www.openwall.com/lists/oss-security/2011/12/21/7
www.redhat.com
http://www.redhat.com/support/errata/RHSA-2012-0051.html
www.securityfocus.com
http://www.securityfocus.com/bid/51172
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