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===================================================================== Red Hat Security Advisory
Synopsis: Important: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2016:1100-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-1100.html Issue date: 2016-05-24 CVE Names: CVE-2015-5364 CVE-2015-5366 =====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 6.6 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux HPC Node EUS (v. 6.6) - noarch, x86_64 Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.6) - x86_64 Red Hat Enterprise Linux Server EUS (v. 6.6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 6.6) - i386, ppc64, s390x, x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* Two flaws were found in the way the Linux kernel's networking implementation handled UDP packets with incorrect checksum values. A remote attacker could potentially use these flaws to trigger an infinite loop in the kernel, resulting in a denial of service on the system, or cause a denial of service in applications using the edge triggered epoll functionality. (CVE-2015-5364, CVE-2015-5366, Important)
Bug Fix(es):
* In anon_vma data structure, the degree counts number of child anon_vmas and of VMAs that point to this anon_vma. In the unlink_anon_vma() function, when its list is empty, anon_vma is going to be freed whether the external refcount is zero or not, so the parent's degree should be decremented. However, failure to decrement the degree triggered a BUG_ON() signal in unlink_anon_vma(). The provided patch fixes this bug, and the degree is now decremented as expected. (BZ#1326027)
Enhancement(s):
* The ixgbe NIC driver has been upgraded to upstream version 4.2.1, which provides a number of bug fixes and enhancements over the previous version. Notably:
NULL pointer crashes related to VLAN support have been fixed
Two more devices from the Intel X550 Ethernet controller family are now supported: IDs 15AC and 15AD
Several PHY-related problems have been addressed: link disruptions and link flapping
Added PHY-related support for Intel X550
System performance has been improved
(BZ#1315702)
4. Solution:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
The system must be rebooted for this update to take effect.
5. Bugs fixed (https://bugzilla.redhat.com/):
1239029 - CVE-2015-5366 CVE-2015-5364 kernel: net: incorrect processing of checksums in UDP implementation
6. Package List:
Red Hat Enterprise Linux HPC Node EUS (v. 6.6):
Source: kernel-2.6.32-504.49.1.el6.src.rpm
noarch: kernel-abi-whitelists-2.6.32-504.49.1.el6.noarch.rpm kernel-doc-2.6.32-504.49.1.el6.noarch.rpm kernel-firmware-2.6.32-504.49.1.el6.noarch.rpm
x86_64: kernel-2.6.32-504.49.1.el6.x86_64.rpm kernel-debug-2.6.32-504.49.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-504.49.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-504.49.1.el6.i686.rpm kernel-debug-devel-2.6.32-504.49.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.49.1.el6.i686.rpm kernel-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-504.49.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-504.49.1.el6.x86_64.rpm kernel-devel-2.6.32-504.49.1.el6.x86_64.rpm kernel-headers-2.6.32-504.49.1.el6.x86_64.rpm perf-2.6.32-504.49.1.el6.x86_64.rpm perf-debuginfo-2.6.32-504.49.1.el6.i686.rpm perf-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.49.1.el6.i686.rpm python-perf-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.6):
x86_64: kernel-debug-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.49.1.el6.x86_64.rpm perf-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm python-perf-2.6.32-504.49.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 6.6):
Source: kernel-2.6.32-504.49.1.el6.src.rpm
i386: kernel-2.6.32-504.49.1.el6.i686.rpm kernel-debug-2.6.32-504.49.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-504.49.1.el6.i686.rpm kernel-debug-devel-2.6.32-504.49.1.el6.i686.rpm kernel-debuginfo-2.6.32-504.49.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.49.1.el6.i686.rpm kernel-devel-2.6.32-504.49.1.el6.i686.rpm kernel-headers-2.6.32-504.49.1.el6.i686.rpm perf-2.6.32-504.49.1.el6.i686.rpm perf-debuginfo-2.6.32-504.49.1.el6.i686.rpm python-perf-debuginfo-2.6.32-504.49.1.el6.i686.rpm
noarch: kernel-abi-whitelists-2.6.32-504.49.1.el6.noarch.rpm kernel-doc-2.6.32-504.49.1.el6.noarch.rpm kernel-firmware-2.6.32-504.49.1.el6.noarch.rpm
ppc64: kernel-2.6.32-504.49.1.el6.ppc64.rpm kernel-bootwrapper-2.6.32-504.49.1.el6.ppc64.rpm kernel-debug-2.6.32-504.49.1.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-504.49.1.el6.ppc64.rpm kernel-debug-devel-2.6.32-504.49.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-504.49.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-504.49.1.el6.ppc64.rpm kernel-devel-2.6.32-504.49.1.el6.ppc64.rpm kernel-headers-2.6.32-504.49.1.el6.ppc64.rpm perf-2.6.32-504.49.1.el6.ppc64.rpm perf-debuginfo-2.6.32-504.49.1.el6.ppc64.rpm python-perf-debuginfo-2.6.32-504.49.1.el6.ppc64.rpm
s390x: kernel-2.6.32-504.49.1.el6.s390x.rpm kernel-debug-2.6.32-504.49.1.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-504.49.1.el6.s390x.rpm kernel-debug-devel-2.6.32-504.49.1.el6.s390x.rpm kernel-debuginfo-2.6.32-504.49.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-504.49.1.el6.s390x.rpm kernel-devel-2.6.32-504.49.1.el6.s390x.rpm kernel-headers-2.6.32-504.49.1.el6.s390x.rpm kernel-kdump-2.6.32-504.49.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-504.49.1.el6.s390x.rpm kernel-kdump-devel-2.6.32-504.49.1.el6.s390x.rpm perf-2.6.32-504.49.1.el6.s390x.rpm perf-debuginfo-2.6.32-504.49.1.el6.s390x.rpm python-perf-debuginfo-2.6.32-504.49.1.el6.s390x.rpm
x86_64: kernel-2.6.32-504.49.1.el6.x86_64.rpm kernel-debug-2.6.32-504.49.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-504.49.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-504.49.1.el6.i686.rpm kernel-debug-devel-2.6.32-504.49.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.49.1.el6.i686.rpm kernel-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-504.49.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-504.49.1.el6.x86_64.rpm kernel-devel-2.6.32-504.49.1.el6.x86_64.rpm kernel-headers-2.6.32-504.49.1.el6.x86_64.rpm perf-2.6.32-504.49.1.el6.x86_64.rpm perf-debuginfo-2.6.32-504.49.1.el6.i686.rpm perf-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.49.1.el6.i686.rpm python-perf-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 6.6):
i386: kernel-debug-debuginfo-2.6.32-504.49.1.el6.i686.rpm kernel-debuginfo-2.6.32-504.49.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-504.49.1.el6.i686.rpm perf-debuginfo-2.6.32-504.49.1.el6.i686.rpm python-perf-2.6.32-504.49.1.el6.i686.rpm python-perf-debuginfo-2.6.32-504.49.1.el6.i686.rpm
ppc64: kernel-debug-debuginfo-2.6.32-504.49.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-504.49.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-504.49.1.el6.ppc64.rpm perf-debuginfo-2.6.32-504.49.1.el6.ppc64.rpm python-perf-2.6.32-504.49.1.el6.ppc64.rpm python-perf-debuginfo-2.6.32-504.49.1.el6.ppc64.rpm
s390x: kernel-debug-debuginfo-2.6.32-504.49.1.el6.s390x.rpm kernel-debuginfo-2.6.32-504.49.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-504.49.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-504.49.1.el6.s390x.rpm perf-debuginfo-2.6.32-504.49.1.el6.s390x.rpm python-perf-2.6.32-504.49.1.el6.s390x.rpm python-perf-debuginfo-2.6.32-504.49.1.el6.s390x.rpm
x86_64: kernel-debug-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-504.49.1.el6.x86_64.rpm perf-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm python-perf-2.6.32-504.49.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-504.49.1.el6.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2015-5364 https://access.redhat.com/security/cve/CVE-2015-5366 https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/
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