[Ksplice][EL6-Updates] New updates available via Ksplice (RHSA-2014:1997-1)

[Oracle Ksplice]

Synopsis: RHSA-2014:1997-1 can now be patched using Ksplice
CVEs: CVE-2012-6657 CVE-2014-3673 CVE-2014-3687 CVE-2014-3688 CVE-2014-5471 CVE-2014-5472 CVE-2014-6410 CVE-2014-7825 CVE-2014-7826 CVE-2014-9090 CVE-2014-9322

Systems running RHCK on Oracle Linux 6, Red Hat Enterprise Linux 6,
CentOS 6, and Scientific Linux 6 can now use Ksplice to patch against
the latest Red Hat Security Advisory, RHSA-2014:1997-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on OL 6, RHEL 6, CentOS
6, and Scientific Linux 6 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-2014-7825, CVE-2014-7826: Perf DoS and local privilege escalation.

A missing validation of syscall id range allows an attacker to trigger a
kernel panic, or leverage it into gaining root privileges if root was
doing perf tracing at that time.


* CVE-2014-9090, CVE-2014-9322: Denial-of-service in double-fault handling on bad stack segment.

A flaw when handling double faults associated with the stack segment
register could lead to a kernel panic.  A local, unprivileged user could
use this flaw via the modify_ldt() system call to cause a
denial-of-service.


* CVE-2014-5471, CVE-2014-5472: Privilege escalation in ISO filesystem implementation.

The parse_rock_ridge_inode_internal() function in the ISO filesystem driver
does not correctly check relocated directories when processing Rock Ridge
child link tags. An attacker with physical access to the system could use a
specially crafted ISO image to cause a denial of service or, potentially,
escalate their privileges.


* CVE-2014-6410: Denial of service in UDF filesystem parsing.

The kernel UDF filesystem driver does not correctly validate indirect
inodes allowing a malicious user to cause a kernel panic by mounting a
UDF volume with deeply nested indirect inodes.


* CVE-2014-3673: Remote denial-of-service in SCTP stack.

A flaw in the SCTP stack when receiving malformed ASCONF chunks leads to a
kernel panic. A remote attacker could use this flaw to cause a
denial-of-service.


* CVE-2014-3687: Remote denial-of-service in SCTP stack.

A flaw in the SCTP stack when receiving duplicate ASCONF chunks leads to a
kernel panic. A remote attacker could use this flaw to cause a
denial-of-service.


* CVE-2012-6657: Kernel crash with keepalive on raw TCP sockets.

Its possible to use RAW sockets to get a crash in
tcp_set_keepalive() / sk_reset_timer() when attempting
to set TCP keepalive on a RAW socket.


* CVE-2014-3688: Remote denial-of-service in SCTP stack by memory exhaustion.

A flaw in the SCTP stack could allow a remote attacker to force a SCTP
server to allocate big amounts of memory and trigger the kernel
out-of-memory killer, leading to a denial-of-service.

SUPPORT

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