【CESA-2017:0907】An update for util-linux is now available for Red Hat Enterprise Linux 7

CESA-2017:0907

An update for util-linux is now available for Red Hat Enterprise Linux 7.

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.

The util-linux packages contain a large variety of low-level system utilities
that are necessary for a Linux system to function. Among others, these include
the fdisk configuration tool and the login program.

Security Fix(es):

* A race condition was found in the way su handled the management of child
processes. A local authenticated attacker could use this flaw to kill other
processes with root privileges under specific conditions. (CVE-2017-2616)

Red Hat would like to thank Tobias Stöckmann for reporting this issue.

Bug Fix(es):

* The “findmnt –target <path>” command prints all file systems where the mount
point directory is <path>. Previously, when used in the chroot environment,
“findmnt –target <path>” incorrectly displayed all mount points. The command
has been fixed so that it now checks the mount point path and returns
information only for the relevant mount point. (BZ#1414481)

Bugs Fixed

1414481 – findmnt –target behaviour changed in 7.3, shows all mount-points in chroot
1418710 – CVE-2017-2616 util-linux: Sending SIGKILL to other processes with root privileges via su