Also, all versions of GLIBC starting from v2.9 are believed to be vulnerable.
Also, it allow the attacker to do some remote code execution.
Security researcher Kenn White tweeted on Twitter No, seriously, patch glibc today.

No, seriously, patch glibc today.
Our initial investigations showed that the issue affected all the versions of glibc since 2.9.
You should definitely update if you are on an older version though.

However computers running on Windows, iOS, OS X or Android will not be affected.
API Web Services and other Web Frameworks such as PHP and Phython are affected by this bug.
Google came to know about this bug last year.

Also, the patch is now available online and those affected by this bug may visit thislink.
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