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[RHSA-2017:0817-01] Moderate: kernel security, bug fix, and enhancement update

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=====================================================================

Red Hat Security Advisory

 

Synopsis: Moderate: kernel security, bug fix, and enhancement update

Advisory ID: RHSA-2017:0817-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2017-0817.html

Issue date: 2017-03-21

CVE Names: CVE-2016-10088 CVE-2016-10142 CVE-2016-2069

CVE-2016-2384 CVE-2016-6480 CVE-2016-7042

CVE-2016-7097 CVE-2016-8399 CVE-2016-9576

=====================================================================

 

1. Summary:

 

An update for kernel is now available for Red Hat Enterprise Linux 6.

 

Red Hat Product Security has rated this update as having a security impact

of Moderate. 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 Desktop (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

 

3. Description:

 

The kernel packages contain the Linux kernel, the core of any Linux

operating system.

 

Security Fix(es):

 

* It was discovered that a remote attacker could leverage the generation of

IPv6 atomic fragments to trigger the use of fragmentation in an arbitrary

IPv6 flow (in scenarios in which actual fragmentation of packets is not

needed) and could subsequently perform any type of a fragmentation-based

attack against legacy IPv6 nodes that do not implement RFC6946.

(CVE-2016-10142, Moderate)

 

* A flaw was discovered in the way the Linux kernel dealt with paging

structures. When the kernel invalidated a paging structure that was not in

use locally, it could, in principle, race against another CPU that is

switching to a process that uses the paging structure in question. A local

user could use a thread running with a stale cached virtual->physical

translation to potentially escalate their privileges if the translation in

question were writable and the physical page got reused for something

critical (for example, a page table). (CVE-2016-2069, Moderate)

 

* A race condition flaw was found in the ioctl_send_fib() function in the

Linux kernel's aacraid implementation. A local attacker could use this flaw

to cause a denial of service (out-of-bounds access or system crash) by

changing a certain size value. (CVE-2016-6480, Moderate)

 

* It was found that when the gcc stack protector was enabled, reading the

/proc/keys file could cause a panic in the Linux kernel due to stack

corruption. This happened because an incorrect buffer size was used to hold

a 64-bit timeout value rendered as weeks. (CVE-2016-7042, Moderate)

 

* It was found that when file permissions were modified via chmod and the

user modifying them was not in the owning group or capable of CAP_FSETID,

the setgid bit would be cleared. Setting a POSIX ACL via setxattr sets the

file permissions as well as the new ACL, but doesn't clear the setgid bit

in a similar way. This could allow a local user to gain group privileges

via certain setgid applications. (CVE-2016-7097, Moderate)

 

* A flaw was found in the Linux networking subsystem where a local attacker

with CAP_NET_ADMIN capabilities could cause an out-of-bounds memory access

by creating a smaller-than-expected ICMP header and sending to its

destination via sendto(). (CVE-2016-8399, Moderate)

 

* It was found that the blk_rq_map_user_iov() function in the Linux

kernel's block device implementation did not properly restrict the type of

iterator, which could allow a local attacker to read or write to arbitrary

kernel memory locations or cause a denial of service (use-after-free) by

leveraging write access to a /dev/sg device. (CVE-2016-9576,

CVE-2016-10088, Moderate)

 

* A flaw was found in the USB-MIDI Linux kernel driver: a double-free error

could be triggered for the 'umidi' object. An attacker with physical access

to the system could use this flaw to escalate their privileges.

(CVE-2016-2384, Low)

 

The CVE-2016-7042 issue was discovered by Ondrej Kozina (Red Hat) and the

CVE-2016-7097 issue was discovered by Andreas Gruenbacher (Red Hat) and Jan

Kara (SUSE).

 

Additional Changes:

 

For detailed information on changes in this release, see the Red Hat

Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9

Technical Notes linked from the References section.

 

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/):

 

847106 - ext2 tests hang while running fsfuzzer

1301893 - CVE-2016-2069 kernel: race condition in the TLB flush logic

1308444 - CVE-2016-2384 kernel: double-free in usb-audio triggered by invalid USB descriptor

1325766 - RHEL6.7: NFSv3 client performance regression where ls -l takes too long with "aggressive readdirplus" commit

1362466 - CVE-2016-6480 kernel: scsi: aacraid: double fetch in ioctl_send_fib()

1368938 - CVE-2016-7097 kernel: Setting a POSIX ACL via setxattr doesn't clear the setgid bit

1373966 - CVE-2016-7042 kernel: Stack corruption while reading /proc/keys when gcc stack protector is enabled

1403145 - CVE-2016-9576 kernel: Use after free in SCSI generic device interface

1403833 - CVE-2016-8399 kernel: net: Out of bounds stack read in memcpy_fromiovec

1412210 - CVE-2016-10088 kernel: Use after free in SCSI generic device interface (CVE-2016-9576 regression)

1415908 - CVE-2016-10142 kernel - IPV6 fragmentation flaw

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 6):

 

Source:

kernel-2.6.32-696.el6.src.rpm

 

i386:

kernel-2.6.32-696.el6.i686.rpm

kernel-debug-2.6.32-696.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debug-devel-2.6.32-696.el6.i686.rpm

kernel-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-696.el6.i686.rpm

kernel-devel-2.6.32-696.el6.i686.rpm

kernel-headers-2.6.32-696.el6.i686.rpm

perf-2.6.32-696.el6.i686.rpm

perf-debuginfo-2.6.32-696.el6.i686.rpm

python-perf-debuginfo-2.6.32-696.el6.i686.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-696.el6.noarch.rpm

kernel-doc-2.6.32-696.el6.noarch.rpm

kernel-firmware-2.6.32-696.el6.noarch.rpm

 

x86_64:

kernel-2.6.32-696.el6.x86_64.rpm

kernel-debug-2.6.32-696.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debug-devel-2.6.32-696.el6.i686.rpm

kernel-debug-devel-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-696.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-696.el6.x86_64.rpm

kernel-devel-2.6.32-696.el6.x86_64.rpm

kernel-headers-2.6.32-696.el6.x86_64.rpm

perf-2.6.32-696.el6.x86_64.rpm

perf-debuginfo-2.6.32-696.el6.i686.rpm

perf-debuginfo-2.6.32-696.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-696.el6.i686.rpm

python-perf-debuginfo-2.6.32-696.el6.x86_64.rpm

 

Red Hat Enterprise Linux Desktop Optional (v. 6):

 

i386:

kernel-debug-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-696.el6.i686.rpm

perf-debuginfo-2.6.32-696.el6.i686.rpm

python-perf-2.6.32-696.el6.i686.rpm

python-perf-debuginfo-2.6.32-696.el6.i686.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-696.el6.x86_64.rpm

perf-debuginfo-2.6.32-696.el6.x86_64.rpm

python-perf-2.6.32-696.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-696.el6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node (v. 6):

 

Source:

kernel-2.6.32-696.el6.src.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-696.el6.noarch.rpm

kernel-doc-2.6.32-696.el6.noarch.rpm

kernel-firmware-2.6.32-696.el6.noarch.rpm

 

x86_64:

kernel-2.6.32-696.el6.x86_64.rpm

kernel-debug-2.6.32-696.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debug-devel-2.6.32-696.el6.i686.rpm

kernel-debug-devel-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-696.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-696.el6.x86_64.rpm

kernel-devel-2.6.32-696.el6.x86_64.rpm

kernel-headers-2.6.32-696.el6.x86_64.rpm

perf-2.6.32-696.el6.x86_64.rpm

perf-debuginfo-2.6.32-696.el6.i686.rpm

perf-debuginfo-2.6.32-696.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-696.el6.i686.rpm

python-perf-debuginfo-2.6.32-696.el6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node Optional (v. 6):

 

x86_64:

kernel-debug-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-696.el6.x86_64.rpm

perf-debuginfo-2.6.32-696.el6.x86_64.rpm

python-perf-2.6.32-696.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-696.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 6):

 

Source:

kernel-2.6.32-696.el6.src.rpm

 

i386:

kernel-2.6.32-696.el6.i686.rpm

kernel-debug-2.6.32-696.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debug-devel-2.6.32-696.el6.i686.rpm

kernel-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-696.el6.i686.rpm

kernel-devel-2.6.32-696.el6.i686.rpm

kernel-headers-2.6.32-696.el6.i686.rpm

perf-2.6.32-696.el6.i686.rpm

perf-debuginfo-2.6.32-696.el6.i686.rpm

python-perf-debuginfo-2.6.32-696.el6.i686.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-696.el6.noarch.rpm

kernel-doc-2.6.32-696.el6.noarch.rpm

kernel-firmware-2.6.32-696.el6.noarch.rpm

 

ppc64:

kernel-2.6.32-696.el6.ppc64.rpm

kernel-bootwrapper-2.6.32-696.el6.ppc64.rpm

kernel-debug-2.6.32-696.el6.ppc64.rpm

kernel-debug-debuginfo-2.6.32-696.el6.ppc64.rpm

kernel-debug-devel-2.6.32-696.el6.ppc64.rpm

kernel-debuginfo-2.6.32-696.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-696.el6.ppc64.rpm

kernel-devel-2.6.32-696.el6.ppc64.rpm

kernel-headers-2.6.32-696.el6.ppc64.rpm

perf-2.6.32-696.el6.ppc64.rpm

perf-debuginfo-2.6.32-696.el6.ppc64.rpm

python-perf-debuginfo-2.6.32-696.el6.ppc64.rpm

 

s390x:

kernel-2.6.32-696.el6.s390x.rpm

kernel-debug-2.6.32-696.el6.s390x.rpm

kernel-debug-debuginfo-2.6.32-696.el6.s390x.rpm

kernel-debug-devel-2.6.32-696.el6.s390x.rpm

kernel-debuginfo-2.6.32-696.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-696.el6.s390x.rpm

kernel-devel-2.6.32-696.el6.s390x.rpm

kernel-headers-2.6.32-696.el6.s390x.rpm

kernel-kdump-2.6.32-696.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-696.el6.s390x.rpm

kernel-kdump-devel-2.6.32-696.el6.s390x.rpm

perf-2.6.32-696.el6.s390x.rpm

perf-debuginfo-2.6.32-696.el6.s390x.rpm

python-perf-debuginfo-2.6.32-696.el6.s390x.rpm

 

x86_64:

kernel-2.6.32-696.el6.x86_64.rpm

kernel-debug-2.6.32-696.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debug-devel-2.6.32-696.el6.i686.rpm

kernel-debug-devel-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-696.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-696.el6.x86_64.rpm

kernel-devel-2.6.32-696.el6.x86_64.rpm

kernel-headers-2.6.32-696.el6.x86_64.rpm

perf-2.6.32-696.el6.x86_64.rpm

perf-debuginfo-2.6.32-696.el6.i686.rpm

perf-debuginfo-2.6.32-696.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-696.el6.i686.rpm

python-perf-debuginfo-2.6.32-696.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 6):

 

i386:

kernel-debug-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-696.el6.i686.rpm

perf-debuginfo-2.6.32-696.el6.i686.rpm

python-perf-2.6.32-696.el6.i686.rpm

python-perf-debuginfo-2.6.32-696.el6.i686.rpm

 

ppc64:

kernel-debug-debuginfo-2.6.32-696.el6.ppc64.rpm

kernel-debuginfo-2.6.32-696.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-696.el6.ppc64.rpm

perf-debuginfo-2.6.32-696.el6.ppc64.rpm

python-perf-2.6.32-696.el6.ppc64.rpm

python-perf-debuginfo-2.6.32-696.el6.ppc64.rpm

 

s390x:

kernel-debug-debuginfo-2.6.32-696.el6.s390x.rpm

kernel-debuginfo-2.6.32-696.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-696.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-696.el6.s390x.rpm

perf-debuginfo-2.6.32-696.el6.s390x.rpm

python-perf-2.6.32-696.el6.s390x.rpm

python-perf-debuginfo-2.6.32-696.el6.s390x.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-696.el6.x86_64.rpm

perf-debuginfo-2.6.32-696.el6.x86_64.rpm

python-perf-2.6.32-696.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-696.el6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 6):

 

Source:

kernel-2.6.32-696.el6.src.rpm

 

i386:

kernel-2.6.32-696.el6.i686.rpm

kernel-debug-2.6.32-696.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debug-devel-2.6.32-696.el6.i686.rpm

kernel-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-696.el6.i686.rpm

kernel-devel-2.6.32-696.el6.i686.rpm

kernel-headers-2.6.32-696.el6.i686.rpm

perf-2.6.32-696.el6.i686.rpm

perf-debuginfo-2.6.32-696.el6.i686.rpm

python-perf-debuginfo-2.6.32-696.el6.i686.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-696.el6.noarch.rpm

kernel-doc-2.6.32-696.el6.noarch.rpm

kernel-firmware-2.6.32-696.el6.noarch.rpm

 

x86_64:

kernel-2.6.32-696.el6.x86_64.rpm

kernel-debug-2.6.32-696.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debug-devel-2.6.32-696.el6.i686.rpm

kernel-debug-devel-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-696.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-696.el6.x86_64.rpm

kernel-devel-2.6.32-696.el6.x86_64.rpm

kernel-headers-2.6.32-696.el6.x86_64.rpm

perf-2.6.32-696.el6.x86_64.rpm

perf-debuginfo-2.6.32-696.el6.i686.rpm

perf-debuginfo-2.6.32-696.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-696.el6.i686.rpm

python-perf-debuginfo-2.6.32-696.el6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 6):

 

i386:

kernel-debug-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-2.6.32-696.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-696.el6.i686.rpm

perf-debuginfo-2.6.32-696.el6.i686.rpm

python-perf-2.6.32-696.el6.i686.rpm

python-perf-debuginfo-2.6.32-696.el6.i686.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-2.6.32-696.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-696.el6.x86_64.rpm

perf-debuginfo-2.6.32-696.el6.x86_64.rpm

python-perf-2.6.32-696.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-696.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-2016-10088

https://access.redhat.com/security/cve/CVE-2016-10142

https://access.redhat.com/security/cve/CVE-2016-2069

https://access.redhat.com/security/cve/CVE-2016-2384

https://access.redhat.com/security/cve/CVE-2016-6480

https://access.redhat.com/security/cve/CVE-2016-7042

https://access.redhat.com/security/cve/CVE-2016-7097

https://access.redhat.com/security/cve/CVE-2016-8399

https://access.redhat.com/security/cve/CVE-2016-9576

https://access.redhat.com/security/updates/classification/#moderate

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Release_Notes/index.html

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Technical_Notes/index.html

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2017 Red Hat, Inc.

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