USN-2180-1: Linux kernel (OMAP4) vulnerabilities

Ubuntu Security Notice USN-2180-1

26th April, 2014

linux-ti-omap4 vulnerabilities

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

• Ubuntu 12.10

Summary

Several security issues were fixed in the kernel.

Software description

• linux-ti-omap4 - Linux kernel for OMAP4

Details

A flaw was discovered in the Kernel Virtual Machine (KVM) subsystem of the

Linux kernel. A guest OS user could exploit this flaw to execute arbitrary

code on the host OS. (CVE-2014-0049)

Al Viro discovered an error in how CIFS in the Linux kernel handles

uncached write operations. An unprivileged local user could exploit this

flaw to cause a denial of service (system crash), obtain sensitive

information from kernel memory, or possibly gain privileges.

(CVE-2014-0069)

Update instructions

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

Ubuntu 12.10:

linux-image-3.5.0-241-omap4 3.5.0-241.57

To update your system, please follow these instructions: http://bit.ly/1aJDvTw.

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-2014-0049, CVE-2014-0069

via Ubuntu Security Notices http://bit.ly/1h0zexl