[Ksplice][Ubuntu-11.04-Updates] New updates available via Ksplice (USN-1531-1)

[Samson Yeung]

Synopsis: USN-1531-1 can now be patched using Ksplice
CVEs: CVE-2012-2136 CVE-2012-2372 CVE-2012-2390

Systems running Ubuntu 11.04 Natty can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-1531-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on Ubuntu 11.04 Natty
install these updates.

On systems that have "autoinstall = yes" in /etc/uptrack/uptrack.conf,
these updates will be installed automatically and you do not need to
take any action.

Alternatively, you can install these updates by running:

# /usr/sbin/uptrack-upgrade -y


DESCRIPTION

* CVE-2012-2390: Memory leak in hugetlbfs mmap() failure.

Incorrect error handling in the mmap() implementation for hugetlbfs
could result in reservations not being freed resulting in a denial of
service.


* CVE-2012-2136: Privilege escalation in TUN/TAP virtual device.

The length of packet fragments to be sent wasn't validated before use,
leading to heap overflow. A user having access to TUN/TAP virtual
device could use this flaw to crash the system or to potentially
escalate their privileges.


* CVE-2012-2372: Denial of service in Reliable Datagram Sockets protocol.

A flaw was found in the Linux kernel's Reliable Datagram Sockets (RDS)
protocol implementation. A local, unprivileged user could use this flaw
to cause a denial of service.

SUPPORT

Ksplice support is available at ksplice-support_ww at oracle.com.