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(RHSA-2017:0501) Important: kernel security and bug fix update

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation freed SKB (socket buffer) resources for a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO option is set on the socket. A local, unprivileged user could use this flaw to alter the kernel memory, allowing them to escalate their privileges on the system. (CVE-2017-6074, Important) Red Hat would like to thank Andrey Konovalov (Google) for reporting this issue. Bug Fix(es): * Previously, running the "ethtool -S" command to get the statistics of a Brocade Network Adapter (BNA) sometimes caused a kernel panic. This update applies a set of patches to the bna driver, and the kernel panic no longer occurs in the described scenario. (BZ#1408130) * Use of a multi-threaded workload with high memory mappings sometimes caused a kernel panic, due to a race condition between the context switch and the pagetable upgrade. This update fixes the switch_mm() by using the complete asce parameter instead of the asce_bits parameter. As a result, the kernel no longer panics in the described scenario. (BZ#1410865) * Previously, the kernel was sending a Transmission Control Protocol (TCP) window which had a size of zero for a socket with an empty receive queue. Consequently, the TCP session became unresponsive. This update fixes the ibmveth driver to set correct values of the gso_size and gso_type variables and to calculate the value of the gso_segs variable for large packets. As a result, the TCP session no longer hangs in the described scenario. (BZ#1411381) * Previously, booting a kdump kernel in some cases failed with this error: Kernel panic - not syncing: Watchdog detected hard LOCKUP on CPU 0. This update ensures that the hpet timer software counters, including hpet_default_delta and hpet_t1_cmp, are initialized before an interrupt request is registered, and the kdump kernel now boots without the mentioned error message. (BZ#1404183) * When one of the drives became unresponsive, all other drives intermittently hung, because the megaraid_sas driver incorrectly sent a reset request to the PowerEdge RAID Controller (PERC). This update fixes megaraid_sas, and thus the hang of one drive no longer leads to intermittent loss of access to all drives on the system. (BZ#1398174)


Affected Package


OS OS Version Package Name Package Version
RedHat 7 kernel-kdump 3.10.0-327.49.2.el7
RedHat 7 kernel-debug-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-tools-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-abi-whitelists 3.10.0-327.49.2.el7
RedHat 7 kernel-doc 3.10.0-327.49.2.el7
RedHat 7 python-perf 3.10.0-327.49.2.el7
RedHat 7 kernel-tools 3.10.0-327.49.2.el7
RedHat 7 kernel-debug-devel 3.10.0-327.49.2.el7
RedHat 7 kernel-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-devel 3.10.0-327.49.2.el7
RedHat 7 kernel-debug-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-headers 3.10.0-327.49.2.el7
RedHat 7 kernel-debug-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-bootwrapper 3.10.0-327.49.2.el7
RedHat 7 python-perf 3.10.0-327.49.2.el7
RedHat 7 kernel-tools-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-headers 3.10.0-327.49.2.el7
RedHat 7 kernel-headers 3.10.0-327.49.2.el7
RedHat 7 python-perf-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-kdump-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-debug 3.10.0-327.49.2.el7
RedHat 7 kernel-bootwrapper 3.10.0-327.49.2.el7
RedHat 7 perf-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel 3.10.0-327.49.2.el7
RedHat 7 python-perf-debuginfo 3.10.0-327.49.2.el7
RedHat 7 perf 3.10.0-327.49.2.el7
RedHat 7 kernel 3.10.0-327.49.2.el7
RedHat 7 kernel-debuginfo-common-x86_64 3.10.0-327.49.2.el7
RedHat 7 python-perf-debuginfo 3.10.0-327.49.2.el7
RedHat 7 python-perf 3.10.0-327.49.2.el7
RedHat 7 python-perf 3.10.0-327.49.2.el7
RedHat 7 kernel-tools 3.10.0-327.49.2.el7
RedHat 7 kernel-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-debuginfo-common-s390x 3.10.0-327.49.2.el7
RedHat 7 perf 3.10.0-327.49.2.el7
RedHat 7 python-perf-debuginfo 3.10.0-327.49.2.el7
RedHat 7 perf-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-headers 3.10.0-327.49.2.el7
RedHat 7 perf 3.10.0-327.49.2.el7
RedHat 7 kernel-devel 3.10.0-327.49.2.el7
RedHat 7 kernel-debug 3.10.0-327.49.2.el7
RedHat 7 kernel-devel 3.10.0-327.49.2.el7
RedHat 7 kernel-tools-libs 3.10.0-327.49.2.el7
RedHat 7 kernel-tools-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-debug 3.10.0-327.49.2.el7
RedHat 7 kernel-debug-devel 3.10.0-327.49.2.el7
RedHat 7 kernel-tools 3.10.0-327.49.2.el7
RedHat 7 kernel-devel 3.10.0-327.49.2.el7
RedHat 7 kernel 3.10.0-327.49.2.el7
RedHat 7 kernel-debug-devel 3.10.0-327.49.2.el7
RedHat 7 kernel-tools-libs-devel 3.10.0-327.49.2.el7
RedHat 7 kernel-debuginfo-common-ppc64 3.10.0-327.49.2.el7
RedHat 7 kernel-debug 3.10.0-327.49.2.el7
RedHat 7 kernel-tools-libs-devel 3.10.0-327.49.2.el7
RedHat 7 kernel-tools-libs 3.10.0-327.49.2.el7
RedHat 7 perf-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel 3.10.0-327.49.2.el7
RedHat 7 kernel-debuginfo-common-ppc64le 3.10.0-327.49.2.el7
RedHat 7 kernel-tools-libs-devel 3.10.0-327.49.2.el7
RedHat 7 kernel-debug-debuginfo 3.10.0-327.49.2.el7
RedHat 7 perf 3.10.0-327.49.2.el7
RedHat 7 kernel-debug-devel 3.10.0-327.49.2.el7
RedHat 7 kernel 3.10.0-327.49.2.el7
RedHat 7 kernel-kdump-devel 3.10.0-327.49.2.el7
RedHat 7 perf-debuginfo 3.10.0-327.49.2.el7
RedHat 7 kernel-tools-libs 3.10.0-327.49.2.el7

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