[El-errata] New updates available via Ksplice (ELSA-2015-3013)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2015-3013 can now be patched using Ksplice
CVEs: CVE-2014-7825 CVE-2014-7826 CVE-2014-8160 CVE-2014-8173 CVE-2014-8369 CVE-2014-8884

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Security Advisory, ELSA-2015-3013.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on EL 7 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-2014-8160: iptables rules by-pass when the protocol module is not loaded.

A flaw in the generic conntrack sub-system allows protocols that do not
have a protocol handler kernel module loaded to pass through the iptables
firewall even if explicitly denied by rule.


* CVE-2014-8173: Denial-of-service in madvise with hugetlb support.

Incorrect page table locking could result in a NULL Pointer dereference
with madvise(MADV_WILLNEED).  A local, unprivileged user could use this
flaw to crash the system.


* CVE-2014-8884: Buffer overflow in DEC2000 and DEC3000 USB adapters.

A lack of input validation when copying an ioctl command could lead to
overflowing data on the stack, causing a kernel panic. A local user could
use this flaw to cause a denial-of-service or potentially escalate
privileges.


* CVE-2014-8369: Denial-of-service in KVM page mapping.

Due to an incomplete fix for CVE-2014-3601, the KVM map pages function
miscalculates the number of pages to be un-pinned in case of a mapping
failure, which allows guest OS users to cause a denial-of-service by
corrupting the host memory.

SUPPORT

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