[Ksplice][Ubuntu-17.04-Updates] New Ksplice updates for Ubuntu 17.04 Zesty (USN-3377-1)

[Oracle Ksplice]

Synopsis: USN-3377-1 can now be patched using Ksplice
CVEs: CVE-2017-1000364 CVE-2017-1000365 CVE-2017-10810 CVE-2017-7482 CVE-2017-7533

Systems running Ubuntu 17.04 Zesty can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-3377-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running Ubuntu 17.04
Zesty 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-2017-10810: Denial-of-service when creating GPU objects using virtio driver.

A missing free in error path when creating GPU objects with virtio
driver could lead to a memory leak. A local attacker could use this flaw
to exhaust kernel memory and cause a denial-of-service.


* CVE-2017-1000365: Privilege escalation when performing exec.

A logic error allows an unprivileged local user to bypass argument and
environmental string size limits when performing an exec syscall. A
local user could use this flaw to bypass guard pages between the stack
and another mapping, leading to potential privilege escalation.


* CVE-2017-7482: Memory corruption when decoding Keberos 5 ticket.

A boundary condition error when decoding Keberos 5 tickets using the
RXRPC keys leads to local buffer overflow. This could lead to memory
corruption and possible privilege escalation.


* CVE-2017-7533: Privilege escalation in inotify during file rename.

A race condition in inotify when renaming a file can result in kernel
memory corruption. A local attacker could use this flaw to escalate
privileges.


* Improved fix to CVE-2017-1000364 to allow stack expansion close to userspace guard.

Some userspace applications like the Java Virtual Machine are trying to
implement a stack guard area manually by using a fixed mapping which,
together with the original Ubuntu fix for CVE-2017-1000364, prevents stack
expansion when it shouldn't have.

SUPPORT

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