[El-errata] New Ksplice updates for UEKR2 2.6.39 on OL5 and OL6 (ELSA-2018-4110)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2018-4110 can now be patched using Ksplice
CVEs: CVE-2017-16532 CVE-2017-16537 CVE-2017-16643 CVE-2017-17558 CVE-2018-10323 CVE-2018-1068 CVE-2018-1093 CVE-2018-5332

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2018-4110.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR2 2.6.39 on
OL5 and OL6 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-2018-10323: NULL pointer dereference when converting extents-format to B+tree in XFS filesystem.

A logic error when converting extents-format to B+tree in XFS filesystem
could lead to a NULL pointer dereference. A local attacker could use
this flaw with a crafted XFS image to cause a denial-of-service.

Orabug: 27989490


* CVE-2018-5332: Out-of-bounds write when sending messages through Reliable Datagram Sockets.

A missing check when sending messages through Reliable Datagram Sockets
could lead to an out-of-bounds write in the heap. A local attacker could
use this flaw to cause a denial-of-service.

Orabug: 27934081


* CVE-2017-17558: Buffer overrun in USB core via integer overflow.

Failing to sanitize the bNumInterfaces field in a USB device descriptor
could allow a malicious device to induce a buffer overrun, potentially
causing a denial-of-service.

Orabug: 27898064


* CVE-2018-1093: Denial-of-service in ext4 bitmap block validity check.

A failure to correctly validate bitmap information from an ext4
filesystem can result in an out-of-bounds read, leading to a Kernel
crash. A local user with the ability to mount an ext4 filesystem could
use this flaw to cause a denial-of-service.

Orabug: 27854370


* CVE-2018-1068: Privilege escalation in bridging interface.

Lack of userspace parameter sanitization in the 32-bit syscall interface
for bridging allows a user with limited privilege to write into kernel
memory. This flaw could be exploited to escalate privilege.

Orabug: 27774010


* Task hang in block device journalling layer fsync.

A transaction ID wraparound could cause a task hang when performing a
sync() operation on a filesystem using the JBD journalling layer under
IO load.

Orabug: 27734012


* IO stalls with FUSE filesystem lock contention.

Incorrect lock ordering in FUSE filesystems could result in a deadlock
and IO stalls or a system hang.

Orabug: 27719848


* CVE-2017-16532: NULL pointer dereference when running USB tests with a crafted USB device.

A missing check when running USB tests with a USB device exposing
invalid endpoints configuration could lead to a NULL pointer dereference.
A local attacker could use this flaw to cause a denial-of-service.

Orabug: 27602321


* NULL pointer dereference when using bind system call on RDS over Infiniband socket.

A logic error when using bind system call on RDS over Infiniband
instance could lead to a NULL pointer dereference. A local attacker
could use this flaw to cause a denial-of-service.

Orabug: 27241654


* CVE-2017-16643: Out-of-bounds access in GTCO CalComp/InterWrite USB tablet HID parsing.

A validation failure when parsing a HID report from a GTCO
CalComp/InterWrite USB tablet can result in an out-of-bounds memory
access. A user with physical access to a system could use this flaw to
cause undefined behaviour or potentially escalate privileges.

Orabug: 27215095


* CVE-2017-16537: NULL pointer dereference when registering SoundGraph iMON Receiver and Display driver.

A missing check when registering SoundGraph iMON Receiver and Display
driver could lead to a NULL pointer dereference. A local attacker could
use this flaw to cause a denial-of-service.

Orabug: 27208383


* Improved CPU feature detection on microcode updates.

Incorrect handling of new CPU features introduced with a microcode
update could fail to be detected by the system or propagated to guest
VMs.

Orabug: 27915355, 27878228


* Improve sysfs attributes to control Spectre mitigations.

Incorrect reporting or setting of spectre mitigations through sysfs
attributes could fool the user about available and enabled mitigations.

Orabug: 27788624, 27811437, 27795350

SUPPORT

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