7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.0005 Low
EPSS
Percentile
17.0%
CentOS Errata and Security Advisory CESA-2016:1406
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix:
Red Hat would like to thank Jann Horn for reporting this issue.
This update also fixes the following bugs:
When providing some services and using the Integrated Services Digital Network (ISDN), the system could terminate unexpectedly due to the call of the tty_ldisc_flush() function. The provided patch removes this call and the system no longer hangs in the described scenario. (BZ#1337443)
An update to the Red Hat Enterprise Linux 6.8 kernel added calls of two
functions provided by the ipv6.ko kernel module, which added a dependency on that module. On systems where ipv6.ko was prevented from being loaded, the nfsd.ko and lockd.ko modules were unable to be loaded. Consequently, it was not possible to run an NFS server or to mount NFS file systems as a client. The underlying source code has been fixed by adding the symbol_get() function, which determines if nfsd.ko and lock.ko are loaded into memory and calls them through function pointers, not directly. As a result, the aforementioned kernel modules are allowed to be loaded even if ipv6.ko is not, and the NFS mount works as expected. (BZ#1341496)
After upgrading the kernel, CPU load average increased compared to the prior kernel version due to the modification of the scheduler. The provided patch set reverts the calculation algorithm of this load average to the the previous version thus resulting in relatively lower values under the same system load. (BZ#1343015)
Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2016-July/084139.html
Affected packages:
kernel
kernel-abi-whitelists
kernel-debug
kernel-debug-devel
kernel-devel
kernel-doc
kernel-firmware
kernel-headers
perf
python-perf
Upstream details at:
https://access.redhat.com/errata/RHSA-2016:1406
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
CentOS | 6 | i686 | kernel | < 2.6.32-642.3.1.el6 | kernel-2.6.32-642.3.1.el6.i686.rpm |
CentOS | 6 | noarch | kernel-abi-whitelists | < 2.6.32-642.3.1.el6 | kernel-abi-whitelists-2.6.32-642.3.1.el6.noarch.rpm |
CentOS | 6 | i686 | kernel-debug | < 2.6.32-642.3.1.el6 | kernel-debug-2.6.32-642.3.1.el6.i686.rpm |
CentOS | 6 | i686 | kernel-debug-devel | < 2.6.32-642.3.1.el6 | kernel-debug-devel-2.6.32-642.3.1.el6.i686.rpm |
CentOS | 6 | i686 | kernel-devel | < 2.6.32-642.3.1.el6 | kernel-devel-2.6.32-642.3.1.el6.i686.rpm |
CentOS | 6 | noarch | kernel-doc | < 2.6.32-642.3.1.el6 | kernel-doc-2.6.32-642.3.1.el6.noarch.rpm |
CentOS | 6 | noarch | kernel-firmware | < 2.6.32-642.3.1.el6 | kernel-firmware-2.6.32-642.3.1.el6.noarch.rpm |
CentOS | 6 | i686 | kernel-headers | < 2.6.32-642.3.1.el6 | kernel-headers-2.6.32-642.3.1.el6.i686.rpm |
CentOS | 6 | i686 | perf | < 2.6.32-642.3.1.el6 | perf-2.6.32-642.3.1.el6.i686.rpm |
CentOS | 6 | i686 | python-perf | < 2.6.32-642.3.1.el6 | python-perf-2.6.32-642.3.1.el6.i686.rpm |
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.0005 Low
EPSS
Percentile
17.0%