Several vulnerabilities have been discovered in kvm, a full virtualization system. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2009-3638 It was discovered an Integer overflow in the kvm_dev_ioctl_get_supported_cpuid function. This allows local users to have an unspecified impact via a KVM_GET_SUPPORTED_CPUID request to the kvm_arch_dev_ioctl function. CVE-2009-3722 It was discovered that the handle_dr function in the KVM subsystem does not properly verify the Current Privilege Level (CPL) before accessing a debug register, which allows guest OS users to cause a denial of service (trap) on the host OS via a crafted application. CVE-2009-4031 It was discovered that the do_insn_fetch function in the x86 emulator in the KVM subsystem tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support. For the stable distribution (lenny), these problems have been fixed in version 72+dfsg-5~lenny4. For the testing distribution (squeeze), and the unstable distribution (sid), these problems will be fixed soon. We recommend that you upgrade your kvm package.
Several vulnerabilities have been discovered in kvm, a full virtualization system. The Common Vulnerabilities and Exposures project identifies the following problems:
It was discovered an Integer overflow in the kvm_dev_ioctl_get_supported_cpuid function. This allows local users to have an unspecified impact via a KVM_GET_SUPPORTED_CPUID request to the kvm_arch_dev_ioctl function.
It was discovered that the handle_dr function in the KVM subsystem does not properly verify the Current Privilege Level (CPL) before accessing a debug register, which allows guest OS users to cause a denial of service (trap) on the host OS via a crafted application.
It was discovered that the do_insn_fetch function in the x86 emulator in the KVM subsystem tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support.
For the stable distribution (lenny), these problems have been fixed in version 72+dfsg-5~lenny4.
For the testing distribution (squeeze), and the unstable distribution (sid), these problems will be fixed soon.
We recommend that you upgrade your kvm package.
MD5 checksums of the listed files are available in the original advisory.
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