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Scientific Linux alert SL-kern-20111005 (kernel)

From:  riehecky@fnal.gov
To:  scientific-linux-errata@fnal.gov
Subject:  Security ERRATA Important: kernel on SL6.x i386/x86_64
Date:  Thu, 6 Oct 2011 09:00:11 -0500
Message-ID:  <201110061400.p96E0BtI012365@fefmon2.fnal.gov>

Synopsis: Important: kernel security, bug fix, and enhancement update Issue Date: 2011-10-05 CVE Numbers: CVE-2011-1160 CVE-2011-1745 CVE-2011-1746 CVE-2011-2484 CVE-2011-2496 CVE-2011-2521 CVE-2011-2723 CVE-2011-2898 CVE-2011-2918 CVE-2011-1833 The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues: * Flaws in the AGPGART driver implementation when handling certain IOCTL commands could allow a local user to cause a denial of service or escalate their privileges. (CVE-2011-1745, CVE-2011-2022, Important) * An integer overflow flaw in agp_allocate_memory() could allow a local user to cause a denial of service or escalate their privileges. (CVE-2011-1746, Important) * A race condition flaw was found in the Linux kernel's eCryptfs implementation. A local attacker could use the mount.ecryptfs_private utility to mount (and then access) a directory they would otherwise not have access to. Note: To correct this issue, a previous ecryptfs-utils update, which provides the user-space part of the fix, must also be installed. (CVE-2011-1833, Moderate) * A denial of service flaw was found in the way the taskstats subsystem handled the registration of process exit handlers. A local, unprivileged user could register an unlimited amount of these handlers, leading to excessive CPU time and memory use. (CVE-2011-2484, Moderate) * A flaw was found in the way mapping expansions were handled. A local, unprivileged user could use this flaw to cause a wrapping condition, triggering a denial of service. (CVE-2011-2496, Moderate) * A flaw was found in the Linux kernel's Performance Events implementation. It could falsely lead the NMI (Non-Maskable Interrupt) Watchdog to detect a lockup and panic the system. A local, unprivileged user could use this flaw to cause a denial of service (kernel panic) using the perf tool. (CVE-2011-2521, Moderate) * A flaw in skb_gro_header_slow() in the Linux kernel could lead to GRO (Generic Receive Offload) fields being left in an inconsistent state. An attacker on the local network could use this flaw to trigger a denial of service. GRO is enabled by default in all network drivers that support it. (CVE-2011-2723, Moderate) * A flaw was found in the way the Linux kernel's Performance Events implementation handled PERF_COUNT_SW_CPU_CLOCK counter overflow. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2011-2918, Moderate) * A flaw was found in the Linux kernel's Trusted Platform Module (TPM) implementation. A local, unprivileged user could use this flaw to leak information to user-space. (CVE-2011-1160, Low) * Flaws were found in the tpacket_rcv() and packet_recvmsg() functions in the Linux kernel. A local, unprivileged user could use these flaws to leak information to user-space. (CVE-2011-2898, Low) This update also fixes various bugs and adds one enhancement. Documentation for these changes will be available shortly from the Technical Notes document linked to in the References section. Users should upgrade to these updated packages, which contain backported patches to correct these issues, and fix the bugs and add the enhancement noted in the Technical Notes. The system must be rebooted for this update to take effect. SL6: i386 kernel-2.6.32-131.17.1.el6.i686.rpm kernel-debug-2.6.32-131.17.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-131.17.1.el6.i686.rpm kernel-debug-devel-2.6.32-131.17.1.el6.i686.rpm kernel-debuginfo-2.6.32-131.17.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-131.17.1.el6.i686.rpm kernel-devel-2.6.32-131.17.1.el6.i686.rpm kernel-headers-2.6.32-131.17.1.el6.i686.rpm perf-2.6.32-131.17.1.el6.i686.rpm perf-debuginfo-2.6.32-131.17.1.el6.i686.rpm noarch kernel-doc-2.6.32-131.17.1.el6.noarch.rpm kernel-firmware-2.6.32-131.17.1.el6.noarch.rpm x86_64 kernel-2.6.32-131.17.1.el6.x86_64.rpm kernel-debug-2.6.32-131.17.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-131.17.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-131.17.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-131.17.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-131.17.1.el6.x86_64.rpm kernel-devel-2.6.32-131.17.1.el6.x86_64.rpm kernel-headers-2.6.32-131.17.1.el6.x86_64.rpm perf-2.6.32-131.17.1.el6.x86_64.rpm perf-debuginfo-2.6.32-131.17.1.el6.x86_64.rpm - Scientific Linux Development Team


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