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kernel: multiple vulnerabilities

Package(s):kernel CVE #(s):CVE-2013-1873 CVE-2013-1796 CVE-2013-1797 CVE-2013-1798
Created:March 25, 2013 Updated:April 1, 2013
Description: From the CVE entries:

The kvm_set_msr_common function in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 does not ensure a required time_page alignment during an MSR_KVM_SYSTEM_TIME operation, which allows guest OS users to cause a denial of service (buffer overflow and host OS memory corruption) or possibly have unspecified other impact via a crafted application. (CVE-2013-1796)

Use-after-free vulnerability in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 allows guest OS users to cause a denial of service (host OS memory corruption) or possibly have unspecified other impact via a crafted application that triggers use of a guest physical address (GPA) in (1) movable or (2) removable memory during an MSR_KVM_SYSTEM_TIME kvm_set_msr_common operation. (CVE-2013-1797)

The ioapic_read_indirect function in virt/kvm/ioapic.c in the Linux kernel through 3.8.4 does not properly handle a certain combination of invalid IOAPIC_REG_SELECT and IOAPIC_REG_WINDOW operations, which allows guest OS users to obtain sensitive information from host OS memory or cause a denial of service (host OS OOPS) via a crafted application. (CVE-2013-1798)

CVE-2013-1873 is a duplicate of CVE-2013-2634, CVE-2013-2635, and CVE-2013-2636.

net/dcb/dcbnl.c in the Linux kernel before 3.8.4 does not initialize certain structures, which allows local users to obtain sensitive information from kernel stack memory via a crafted application. (CVE-2013-2634)

The rtnl_fill_ifinfo function in net/core/rtnetlink.c in the Linux kernel before 3.8.4 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel stack memory via a crafted application. (CVE-2013-2635)

net/bridge/br_mdb.c in the Linux kernel before 3.8.4 does not initialize certain structures, which allows local users to obtain sensitive information from kernel memory via a crafted application. (CVE-2013-2636)

Alerts:
Fedora FEDORA-2013-4240 2013-03-23
Fedora FEDORA-2013-4357 2013-03-30

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