Synopsis: Important: kernel security and bug fix update
Advisory ID: SLSA-2017:0892-1
Issue Date: 2017-04-11
CVE Numbers: CVE-2016-7910
CVE-2017-2636
--
Security Fix(es):
* A race condition flaw was found in the N_HLDC Linux kernel driver when
accessing n_hdlc.tbuf list that can lead to double free. A local,
unprivileged user able to set the HDLC line discipline on the tty device
could use this flaw to increase their privileges on the system.
(CVE-2017-2636, Important)
* A flaw was found in the Linux kernel's implementation of seq_file where
a local attacker could manipulate memory in the put() function pointer.
This could lead to memory corruption and possible privileged escalation.
(CVE-2016-7910, Moderate)
Bug Fix(es):
* Previously, Chelsio firmware included an incorrectly-formatted firmware
bin file. As a consequence, the firmware could not be flashed. This update
provides a firmware bin file that is formatted correctly. As a result,
Chelsio firmware can now be flashed successfully.
* When multiple simultaneous processes attempted to read from the
/proc/stat file, spinlock overhead was generated on Non-Uniform Memory
Access (NUMA) systems. Consequently, a large amount of CPU was consumed.
With this update, the underlying source code has been fixed to avoid
taking spinlock when the interrupt line does not exist. As a result, the
spinlock overhead is now generated less often, and multiple simultaneous
processes can now read /proc/stat without consuming a large amount of CPU.
--
SL6
x86_64
kernel-2.6.32-696.1.1.el6.x86_64.rpm
kernel-debug-2.6.32-696.1.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-696.1.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-696.1.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-696.1.1.el6.i686.rpm
kernel-debug-devel-2.6.32-696.1.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-696.1.1.el6.i686.rpm
kernel-debuginfo-2.6.32-696.1.1.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-696.1.1.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-696.1.1.el6.x86_64.rpm
kernel-devel-2.6.32-696.1.1.el6.x86_64.rpm
kernel-headers-2.6.32-696.1.1.el6.x86_64.rpm
perf-2.6.32-696.1.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-696.1.1.el6.i686.rpm
perf-debuginfo-2.6.32-696.1.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-696.1.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-696.1.1.el6.x86_64.rpm
python-perf-2.6.32-696.1.1.el6.x86_64.rpm
i386
kernel-2.6.32-696.1.1.el6.i686.rpm
kernel-debug-2.6.32-696.1.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-696.1.1.el6.i686.rpm
kernel-debug-devel-2.6.32-696.1.1.el6.i686.rpm
kernel-debuginfo-2.6.32-696.1.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-696.1.1.el6.i686.rpm
kernel-devel-2.6.32-696.1.1.el6.i686.rpm
kernel-headers-2.6.32-696.1.1.el6.i686.rpm
perf-2.6.32-696.1.1.el6.i686.rpm
perf-debuginfo-2.6.32-696.1.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-696.1.1.el6.i686.rpm
python-perf-2.6.32-696.1.1.el6.i686.rpm
noarch
kernel-abi-whitelists-2.6.32-696.1.1.el6.noarch.rpm
kernel-doc-2.6.32-696.1.1.el6.noarch.rpm
kernel-firmware-2.6.32-696.1.1.el6.noarch.rpm
- Scientific Linux Development Team
