Updated util-linux and mount packages that fix a security issue are
The util-linux package contains a large variety of low-level system
utilities that are necessary for a Linux system to function.
The mount package contains the mount, umount, swapon and swapoff
2. Relevant releases/architectures:
Red Hat Linux 7.3 - i386
Red Hat Linux 9 - i386
Fedora Core 1 - i386
Fedora Core 2 - i386
3. Problem description:
A bug was found in the way the umount command is executed by normal
users. It may be possible for a user to gain elevated privileges if the
user is able to execute the "umount -r" command on a mounted file
system. The file system will be re-mounted only with the "readonly" flag
set, clearing flags such as "nosuid" and "noexec". The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
name CVE-2005-2876 to this issue.
All users of util-linux and mount should upgrade to these updated
packages, which contain a backported patch to correct this issue.
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
To update all RPMs for your particular architecture, run:
rpm -Fvh [filenames]
where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which
are not installed but included in the list will not be updated. Note
that you can also use wildcards (*.rpm) if your current directory *only*
contains the desired RPMs.
Please note that this update is also available via yum and apt. Many
people find this an easier way to apply updates. To use yum issue:
or to use apt:
apt-get update; apt-get upgrade
This will start an interactive process that will result in the
appropriate RPMs being upgraded on your system. This assumes that you
have yum or apt-get configured for obtaining Fedora Legacy content.
Please visit http://www.fedoralegacy.org/docs for directions on how to
configure yum and apt-get.