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(RHSA-2016:1875) Important: kernel-rt security and bug fix update

Description

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. The kernel-rt packages have been upgraded to the kernel-3.10.0-327.36.1 source tree, which provides a number of bug fixes over the previous version. (BZ#1366538) Security Fix(es): * A security flaw was found in the Linux kernel in the mark_source_chains() function in "net/ipv4/netfilter/ip_tables.c". It is possible for a user-supplied "ipt_entry" structure to have a large "next_offset" field. This field is not bounds checked prior to writing to a counter value at the supplied offset. (CVE-2016-3134, Important) * A flaw was discovered in processing setsockopt for 32 bit processes on 64 bit systems. This flaw will allow attackers to alter arbitrary kernel memory when unloading a kernel module. This action is usually restricted to root-privileged users but can also be leveraged if the kernel is compiled with CONFIG_USER_NS and CONFIG_NET_NS and the user is granted elevated privileges. (CVE-2016-4997, Important) * An out-of-bounds heap memory access leading to a Denial of Service, heap disclosure, or further impact was found in setsockopt(). The function call is normally restricted to root, however some processes with cap_sys_admin may also be able to trigger this flaw in privileged container environments. (CVE-2016-4998, Moderate)


Affected Package


OS OS Version Package Name Package Version
RedHat 7 kernel-rt-trace-kvm 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-debuginfo-common-x86_64 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-devel 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-debuginfo 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-doc 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-debug-kvm 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-trace-debuginfo 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-trace-kvm-debuginfo 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-debug-debuginfo 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-trace 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-trace-devel 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-kvm-debuginfo 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-debug-kvm-debuginfo 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-debug-devel 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-kvm 3.10.0-327.36.1.rt56.237.el7
RedHat 7 kernel-rt-debug 3.10.0-327.36.1.rt56.237.el7

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