USN-2731-1: Linux kernel vulnerability

Releases

• Ubuntu 12.04

Packages

• linux - Linux kernel

Details

Benjamin Randazzo discovered an information leak in the md (multiple
device) driver when the bitmap_info.file is disabled. A local privileged
attacker could use this to obtain sensitive information from the kernel.

Update instructions

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

Ubuntu 12.04

• linux-image-3.2.0-90-powerpc64-smp - 3.2.0-90.128
• linux-image-3.2.0-90-powerpc-smp - 3.2.0-90.128
• linux-image-3.2.0-90-generic-pae - 3.2.0-90.128
• linux-image-3.2.0-90-virtual - 3.2.0-90.128
• linux-image-3.2.0-90-highbank - 3.2.0-90.128
• linux-image-3.2.0-90-omap - 3.2.0-90.128
• linux-image-3.2.0-90-generic - 3.2.0-90.128

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-2015-5697

Related notices

• USN-2777-1: linux-image-3.16.0-51-lowlatency, linux-image-extra-3.16.0-51-generic, linux-lts-utopic, linux-image-3.16.0-51-powerpc-e500mc, linux-image-3.16.0-51-powerpc64-smp, linux-image-3.16.0-51-powerpc64-emb, linux-image-3.16.0-51-generic-lpae, linux-image-3.16.0-51-powerpc-smp, linux-image-3.16.0-51-generic
• USN-2732-1: linux-ti-omap4, linux-image-3.2.0-1470-omap4
• USN-2748-1: linux, linux-image-3.13.0-65-powerpc64-emb, linux-image-3.13.0-65-generic, linux-image-3.13.0-65-powerpc-e500, linux-image-3.13.0-65-powerpc-e500mc, linux-image-3.13.0-65-powerpc-smp, linux-image-3.13.0-65-generic-lpae, linux-image-3.13.0-65-powerpc64-smp, linux-image-3.13.0-65-lowlatency, linux-image-extra-3.13.0-65-generic
• USN-2751-1: linux-image-extra-3.19.0-30-generic, linux-image-3.19.0-30-generic-lpae, linux-image-3.19.0-30-powerpc64-smp, linux-image-3.19.0-30-powerpc-e500mc, linux-lts-vivid, linux-image-3.19.0-30-powerpc-smp, linux-image-3.19.0-30-powerpc64-emb, linux-image-3.19.0-30-generic, linux-image-3.19.0-30-lowlatency
• USN-2749-1: linux-lts-trusty, linux-image-3.13.0-65-generic, linux-image-3.13.0-65-generic-lpae
• USN-2752-1: linux, linux-image-3.19.0-30-generic-lpae, linux-image-3.19.0-30-powerpc64-smp, linux-image-3.19.0-30-powerpc-e500mc, linux-image-3.19.0-30-powerpc-smp, linux-image-3.19.0-30-powerpc64-emb, linux-image-3.19.0-30-generic, linux-image-3.19.0-30-lowlatency