USN-2665-1: Linux kernel (Vivid HWE) vulnerabilities

Ubuntu Security Notice USN-2665-1

7th July, 2015

linux-lts-vivid vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 14.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

• linux-lts-vivid - Linux hardware enablement kernel from Vivid

Details

A race condition was discovered in the Linux kernel's file_handle size
verification. A local user could exploit this flaw to read potentially
sensative memory locations. (CVE-2015-1420)

A underflow error was discovered in the Linux kernel's Ozmo Devices USB
over WiFi host controller driver. A remote attacker could exploit this flaw
to cause a denial of service (system crash) or potentially execute
arbitrary code via a specially crafted packet. (CVE-2015-4001)

A bounds check error was discovered in the Linux kernel's Ozmo Devices USB
over WiFi host controller driver. A remote attacker could exploit this flaw
to cause a denial of service (system crash) or potentially execute
arbitrary code via a specially crafted packet. (CVE-2015-4002)

A division by zero error was discovered in the Linux kernel's Ozmo Devices
USB over WiFi host controller driver. A remote attacker could exploit this
flaw to cause a denial of service (system crash). (CVE-2015-4003)

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 14.04 LTS:

linux-image-3.19.0-22-generic 3.19.0-22.22~14.04.1

linux-image-3.19.0-22-powerpc-e500mc 3.19.0-22.22~14.04.1

linux-image-3.19.0-22-lowlatency 3.19.0-22.22~14.04.1

linux-image-3.19.0-22-powerpc-smp 3.19.0-22.22~14.04.1

linux-image-3.19.0-22-generic-lpae 3.19.0-22.22~14.04.1

linux-image-3.19.0-22-powerpc64-smp 3.19.0-22.22~14.04.1

linux-image-3.19.0-22-powerpc64-emb 3.19.0-22.22~14.04.1

To update your system, please follow these instructions: http://ift.tt/17VXqjU.

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

CVE-2015-1420, CVE-2015-4001, CVE-2015-4002, CVE-2015-4003

from Ubuntu Security Notices http://ift.tt/1Ha4oyF