Home / vulnerabilities Secunia Security Advisory 47293
Posted on 23 December 2011
Source : packetstormsecurity.org Link
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TITLE:
Linux Kernel KVM PIT Denial of Service Vulnerability
SECUNIA ADVISORY ID:
SA47293
VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47293/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47293
RELEASE DATE:
2011-12-22
DISCUSS ADVISORY:
http://secunia.com/advisories/47293/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
* Last Update
* Popularity
* Comments
* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)
http://secunia.com/advisories/47293/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=47293
ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
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http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users in a guest virtual machine to
cause a DoS (Denial of Service).
The vulnerability is caused due to an error in the
"create_pit_timer()" function (arch/x86/kvm/i8254.c) when configuring
a Programmable Interrupt Timer (PIT) and can be exploited to cause a
NULL pointer dereference resulting in the crash of a host.
SOLUTION:
Restrict access to trusted users only.
PROVIDED AND/OR DISCOVERED BY:
Jan Kiszka
ORIGINAL ADVISORY:
http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/83564
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
DEEP LINKS:
Further details available in Customer Area:
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EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
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