USN-3008-1: Linux kernel (Qualcomm Snapdragon) vulnerability

USN-3008-1: Linux kernel (Qualcomm Snapdragon) vulnerability

Ubuntu Security Notice USN-3008-1

10th June, 2016

linux-snapdragon vulnerability

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

  • Ubuntu 16.04 LTS

Summary

The system could be made to crash under certain conditions.

Software description

  • linux-snapdragon
    – Linux kernel for Snapdragon Processors

Details

Jann Horn discovered that eCryptfs improperly attempted to use the mmap()
handler of a lower filesystem that did not implement one, causing a
recursive page fault to occur. A local unprivileged attacker could use to
cause a denial of service (system crash) or possibly execute arbitrary code
with administrative privileges.

Update instructions

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

Ubuntu 16.04 LTS:
linux-image-4.4.0-1015-snapdragon

4.4.0-1015.18

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

CVE-2016-1583

Source: USN-3008-1: Linux kernel (Qualcomm Snapdragon) vulnerability

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