CVE-2013-1796

La función kvm_set_msr_common en arch/x86/kvm/x86.c en el kernel de Linux hasta v3.8.4 no asegura una alineación time_page requerido durante una operación MSR_KVM_SYSTEM_TIME, que permite a usuarios de sistemas operativos invitados para causar una denegación de servicios (desbordamiento de memoria y corrupción de memoria en el sistema operativo anfitrión) o posiblemente tener un impacto no especificado a través de una aplicación diseñada.

Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6. An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way the Intel i915 driver in the Linux kernel handled the allocation of the buffer used for relocation copies. A local user with console access could use this flaw to cause a denial of service or escalate their privileges. A buffer overflow flaw was found in the way UTF-8 characters were converted to UTF-16 in the utf8s_to_utf16s() function of the Linux kernel's FAT file system implementation. A local user able to mount a FAT file system with the "utf8=1" option could use this flaw to crash the system or, potentially, to escalate their privileges.