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OVAL

RHSA-2017:0892-01 -- Redhat kernel, perf

ID: oval:org.secpod.oval:def:502017Date: (C)2017-04-14   (M)2023-12-07
Class: PATCHFamily: unix




The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: * 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. * 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. Red Hat would like to thank Alexander Popov for reporting CVE-2017-2636. Bug Fix: * 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 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

Platform:
Red Hat Enterprise Linux 6
Product:
kernel
perf
Reference:
RHSA-2017:0892-01
CVE-2016-7910
CVE-2017-2636
CVE    2
CVE-2017-2636
CVE-2016-7910
CPE    5
cpe:/o:linux:linux_kernel
cpe:/o:redhat:enterprise_linux:6
cpe:/a:perf:perf
cpe:/o:linux:linux_kernel:4.10.1
...

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