-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
===================================================================== Red Hat Security Advisory
Synopsis: Important: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2016:1847-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-1847.html Issue date: 2016-09-14 CVE Names: CVE-2016-3134 CVE-2016-4997 CVE-2016-4998 =====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 7.
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 Client (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux operating system.
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)
Bug Fix(es):
* In some cases, running the ipmitool command caused a kernel panic due to a race condition in the ipmi message handler. This update fixes the race condition, and the kernel panic no longer occurs in the described scenario. (BZ#1353947)
* Previously, running I/O-intensive operations in some cases caused the system to terminate unexpectedly after a null pointer dereference in the kernel. With this update, a set of patches has been applied to the 3w-9xxx and 3w-sas drivers that fix this bug. As a result, the system no longer crashes in the described scenario. (BZ#1362040)
* Previously, the Stream Control Transmission Protocol (SCTP) sockets did not inherit the SELinux labels properly. As a consequence, the sockets were labeled with the unlabeled_t SELinux type which caused SCTP connections to fail. The underlying source code has been modified, and SCTP connections now works as expected. (BZ#1354302)
* Previously, the bnx2x driver waited for transmission completions when recovering from a parity event, which substantially increased the recovery time. With this update, bnx2x does not wait for transmission completion in the described circumstances. As a result, the recovery of bnx2x after a parity event now takes less time. (BZ#1351972)
Enhancement(s):
* With this update, the audit subsystem enables filtering of processes by name besides filtering by PID. Users can now audit by executable name (with the "-F exe=<path-to-executable>" option), which allows expression of many new audit rules. This functionality can be used to create events when specific applications perform a syscall. (BZ#1345774)
* With this update, the Nonvolatile Memory Express (NVMe) and the multi-queue block layer (blk_mq) have been upgraded to the Linux 4.5 upstream version. Previously, a race condition between timeout and freeing request in blk_mq occurred, which could affect the blk_mq_tag_to_rq() function and consequently a kernel oops could occur. The provided patch fixes this race condition by updating the tags with the active request. The patch simplifies blk_mq_tag_to_rq() and ensures that the two requests are not active at the same time. (BZ#1350352)
* The Hyper-V storage driver (storvsc) has been upgraded from upstream. This update provides moderate performance improvement of I/O operations when using storvscr for certain workloads. (BZ#1360161)
Additional Changes:
Space precludes documenting all of the bug fixes and enhancements included in this advisory. To see the complete list of bug fixes and enhancements, refer to the following KnowledgeBase article: https://access.redhat.com/articles/2592321
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/):
1317383 - CVE-2016-3134 kernel: netfilter: missing bounds check in ipt_entry structure 1349722 - CVE-2016-4997 kernel: compat IPT_SO_SET_REPLACE setsockopt 1349886 - CVE-2016-4998 kernel: out of bounds reads when processing IPT_SO_SET_REPLACE setsockopt
6. Package List:
Red Hat Enterprise Linux Client (v. 7):
Source: kernel-3.10.0-327.36.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-327.36.1.el7.noarch.rpm kernel-doc-3.10.0-327.36.1.el7.noarch.rpm
x86_64: kernel-3.10.0-327.36.1.el7.x86_64.rpm kernel-debug-3.10.0-327.36.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.36.1.el7.x86_64.rpm kernel-devel-3.10.0-327.36.1.el7.x86_64.rpm kernel-headers-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.36.1.el7.x86_64.rpm perf-3.10.0-327.36.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm python-perf-3.10.0-327.36.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: kernel-debug-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.36.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: kernel-3.10.0-327.36.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-327.36.1.el7.noarch.rpm kernel-doc-3.10.0-327.36.1.el7.noarch.rpm
x86_64: kernel-3.10.0-327.36.1.el7.x86_64.rpm kernel-debug-3.10.0-327.36.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.36.1.el7.x86_64.rpm kernel-devel-3.10.0-327.36.1.el7.x86_64.rpm kernel-headers-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.36.1.el7.x86_64.rpm perf-3.10.0-327.36.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm python-perf-3.10.0-327.36.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64: kernel-debug-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.36.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: kernel-3.10.0-327.36.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-327.36.1.el7.noarch.rpm kernel-doc-3.10.0-327.36.1.el7.noarch.rpm
ppc64: kernel-3.10.0-327.36.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-327.36.1.el7.ppc64.rpm kernel-debug-3.10.0-327.36.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-327.36.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-327.36.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-327.36.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-327.36.1.el7.ppc64.rpm kernel-devel-3.10.0-327.36.1.el7.ppc64.rpm kernel-headers-3.10.0-327.36.1.el7.ppc64.rpm kernel-tools-3.10.0-327.36.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-327.36.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-327.36.1.el7.ppc64.rpm perf-3.10.0-327.36.1.el7.ppc64.rpm perf-debuginfo-3.10.0-327.36.1.el7.ppc64.rpm python-perf-3.10.0-327.36.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.ppc64.rpm
ppc64le: kernel-3.10.0-327.36.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-327.36.1.el7.ppc64le.rpm kernel-debug-3.10.0-327.36.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-327.36.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-327.36.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-327.36.1.el7.ppc64le.rpm kernel-devel-3.10.0-327.36.1.el7.ppc64le.rpm kernel-headers-3.10.0-327.36.1.el7.ppc64le.rpm kernel-tools-3.10.0-327.36.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-327.36.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-327.36.1.el7.ppc64le.rpm perf-3.10.0-327.36.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-327.36.1.el7.ppc64le.rpm python-perf-3.10.0-327.36.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.ppc64le.rpm
s390x: kernel-3.10.0-327.36.1.el7.s390x.rpm kernel-debug-3.10.0-327.36.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-327.36.1.el7.s390x.rpm kernel-debug-devel-3.10.0-327.36.1.el7.s390x.rpm kernel-debuginfo-3.10.0-327.36.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-327.36.1.el7.s390x.rpm kernel-devel-3.10.0-327.36.1.el7.s390x.rpm kernel-headers-3.10.0-327.36.1.el7.s390x.rpm kernel-kdump-3.10.0-327.36.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-327.36.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-327.36.1.el7.s390x.rpm perf-3.10.0-327.36.1.el7.s390x.rpm perf-debuginfo-3.10.0-327.36.1.el7.s390x.rpm python-perf-3.10.0-327.36.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.s390x.rpm
x86_64: kernel-3.10.0-327.36.1.el7.x86_64.rpm kernel-debug-3.10.0-327.36.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.36.1.el7.x86_64.rpm kernel-devel-3.10.0-327.36.1.el7.x86_64.rpm kernel-headers-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.36.1.el7.x86_64.rpm perf-3.10.0-327.36.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm python-perf-3.10.0-327.36.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
ppc64: kernel-debug-debuginfo-3.10.0-327.36.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-327.36.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-327.36.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-327.36.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-327.36.1.el7.ppc64.rpm perf-debuginfo-3.10.0-327.36.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.ppc64.rpm
ppc64le: kernel-debug-debuginfo-3.10.0-327.36.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-327.36.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-327.36.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-327.36.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-327.36.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-327.36.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-327.36.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.ppc64le.rpm
x86_64: kernel-debug-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.36.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: kernel-3.10.0-327.36.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-327.36.1.el7.noarch.rpm kernel-doc-3.10.0-327.36.1.el7.noarch.rpm
x86_64: kernel-3.10.0-327.36.1.el7.x86_64.rpm kernel-debug-3.10.0-327.36.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.36.1.el7.x86_64.rpm kernel-devel-3.10.0-327.36.1.el7.x86_64.rpm kernel-headers-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.36.1.el7.x86_64.rpm perf-3.10.0-327.36.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm python-perf-3.10.0-327.36.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64: kernel-debug-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.36.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.36.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.36.1.el7.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-2016-3134 https://access.redhat.com/security/cve/CVE-2016-4997 https://access.redhat.com/security/cve/CVE-2016-4998 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/articles/2592321
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
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