Pengutronix has released new versions of their OSELAS Toolchains, which fix the CVE-2015-7547 --- glibc getaddrinfo() stack-based buffer overflow issue:

Step-by-step instructions to switch your BSP to a new toolchain

1. Build the new OSELAS toolchain

• Choose the new toolchain version, which fits best and build it according to the Application Note: Building OSELAS.Toolchains().
  

2. Reconfigure your BSP / platform

• Move to your BSP root folder and execute

  ptxdist platformconfig

• Navigate to

  architecture -->  toolchain -->

  and modify the following options

  (OSELAS.Toolchain-YYYY.MM.P) check for specific toolchain vendor
  (MAJOR.MINOR[.PATCH]) check for specific glibc version

  to match the version information for the toochain you built in the first step.

• Exit PTXdist and make sure your changes are saved.
• To make PTXdist use the new toolchain for your BSP / platform execute

  ptxdist toolchain <path to the new toolchain>

3. Rebuild your BSP

• For a clean rebuild execute

  ptxdist clean
  ptxdist go --git