This script is Copyright (C) 2014 Tenable Network Security, Inc.
The remote Scientific Linux host is missing one or more security
- It was found that the permission checks performed by the
Linux kernel when a netlink message was received were
not sufficient. A local, unprivileged user could
potentially bypass these restrictions by passing a
netlink socket as stdout or stderr to a more privileged
process and altering the output of this process.
This update also fixes the following bugs :
- Previously, the kernel did not successfully deliver
multicast packets when the multicast querier was
disabled. Consequently, the corosync utility terminated
unexpectedly and the affected storage node did not join
its intended cluster. With this update, multicast
packets are delivered properly when the multicast
querier is disabled, and corosync handles the node as
- Previously, the kernel wrote the metadata contained in
all system information blocks on a single page of the
/proc/sysinfo file. However, when the machine
configuration was very extensive and the data did not
fit on a single page, the system overwrote random memory
regions, which in turn caused data corruption when
reading the /proc/sysconf file. With this update,
/proc/sysinfo automatically allocates a larger buffer if
the data output does not fit the current buffer, which
prevents the data corruption.
- Prior to this update, the it_real_fn() function did not,
in certain cases, successfully acquire the SIGLOCK
signal when the do_setitimer() function used the
ITIMER_REAL timer. As a consequence, the current process
entered an endless loop and became unresponsive. This
update fixes the bug and it_real_fn() no longer causes
the kernel to become unresponsive.
The system must be rebooted for this update to take effect.
See also :
Update the affected packages.
Risk factor :
Low / CVSS Base Score : 2.1