|Subject:||Security ERRATA Moderate: kernel on SL6.x i386/x86_64|
|Date:||Thu, 8 Mar 2012 09:21:42 -0600|
Synopsis: Moderate: kernel security and bug fix update Issue Date: 2012-03-06 CVE Numbers: CVE-2011-4077 CVE-2011-4081 CVE-2011-4132 CVE-2011-4347 CVE-2011-4594 CVE-2011-4611 CVE-2011-4622 CVE-2012-0207 CVE-2012-0038 CVE-2012-0045 The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues: * A buffer overflow flaw was found in the way the Linux kernel's XFS file system implementation handled links with overly long path names. A local, unprivileged user could use this flaw to cause a denial of service or escalate their privileges by mounting a specially-crafted disk. (CVE-2011-4077, Moderate) * Flaws in ghash_update() and ghash_final() could allow a local, unprivileged user to cause a denial of service. (CVE-2011-4081, Moderate) * A flaw was found in the Linux kernel's Journaling Block Device (JBD). A local, unprivileged user could use this flaw to crash the system by mounting a specially-crafted ext3 or ext4 disk. (CVE-2011-4132, Moderate) * It was found that the kvm_vm_ioctl_assign_device() function in the KVM (Kernel-based Virtual Machine) subsystem of a Linux kernel did not check if the user requesting device assignment was privileged or not. A local, unprivileged user on the host could assign unused PCI devices, or even devices that were in use and whose resources were not properly claimed by the respective drivers, which could result in the host crashing. (CVE-2011-4347, Moderate) * Two flaws were found in the way the Linux kernel's __sys_sendmsg() function, when invoked via the sendmmsg() system call, accessed user-space memory. A local, unprivileged user could use these flaws to cause a denial of service. (CVE-2011-4594, Moderate) * A flaw was found in the way the KVM subsystem of a Linux kernel handled PIT (Programmable Interval Timer) IRQs (interrupt requests) when there was no virtual interrupt controller set up. A local, unprivileged user on the host could force this situation to occur, resulting in the host crashing. (CVE-2011-4622, Moderate) * A flaw was found in the way the Linux kernel's XFS file system implementation handled on-disk Access Control Lists (ACLs). A local, unprivileged user could use this flaw to cause a denial of service or escalate their privileges by mounting a specially-crafted disk. (CVE-2012-0038, Moderate) * A flaw was found in the way the Linux kernel's KVM hypervisor implementation emulated the syscall instruction for 32-bit guests. An unprivileged guest user could trigger this flaw to crash the guest. (CVE-2012-0045, Moderate) * A divide-by-zero flaw was found in the Linux kernel's igmp_heard_query() function. An attacker able to send certain IGMP (Internet Group Management Protocol) packets to a target system could use this flaw to cause a denial of service. (CVE-2012-0207, Moderate) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect. SL6: i386 kernel-2.6.32-220.7.1.el6.i686.rpm kernel-debug-2.6.32-220.7.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-220.7.1.el6.i686.rpm kernel-debug-devel-2.6.32-220.7.1.el6.i686.rpm kernel-debuginfo-2.6.32-220.7.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-220.7.1.el6.i686.rpm kernel-devel-2.6.32-220.7.1.el6.i686.rpm kernel-headers-2.6.32-220.7.1.el6.i686.rpm perf-2.6.32-220.7.1.el6.i686.rpm perf-debuginfo-2.6.32-220.7.1.el6.i686.rpm python-perf-2.6.32-220.7.1.el6.i686.rpm noarch kernel-doc-2.6.32-220.7.1.el6.noarch.rpm kernel-firmware-2.6.32-220.7.1.el6.noarch.rpm x86_64 kernel-2.6.32-220.7.1.el6.x86_64.rpm kernel-debug-2.6.32-220.7.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-220.7.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-220.7.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.7.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.7.1.el6.x86_64.rpm kernel-devel-2.6.32-220.7.1.el6.x86_64.rpm kernel-headers-2.6.32-220.7.1.el6.x86_64.rpm perf-2.6.32-220.7.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.7.1.el6.x86_64.rpm python-perf-2.6.32-220.7.1.el6.x86_64.rpm - Scientific Linux Development Team
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