“Most serious” Linux privilege-escalation bug ever is under active exploit

“Most serious” Linux privilege-escalation bug ever is under active exploit

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A serious vulnerability that has been present for nine years in virtually all versions of the Linux operating system is under active exploit, according to researchers who are advising users to install a patch as soon as possible.
While CVE-2016-5195, as the bug is cataloged, amounts to a mere privilege-escalation vulnerability rather than a more serious code-execution vulnerability, there are several reasons many researchers are taking it extremely seriously. For one thing, it’s not hard to develop exploits that work reliably. For another, the flaw is located in a section of the Linux kernel that’s a part of virtually every distribution of the open-source OS released for almost a decade. What’s more, researchers have discovered attack code that indicates the vulnerability is being actively and maliciously exploited in the wild.
The underlying bug was patched this week by the maintainers of the official Linux kernel. Downstream distributors are in the process of releasing updates that incorporate the fix. Red Hat has classified the vulnerability as “important.”

Source: http://arstechnica.com/security/2016/10/most-serious-linux-privilege-escalation-bug-ever-is-under-active-exploit/
Submitted by: Arnfried Walbrecht

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