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Linux Has Been Bitten By Its Most High-severity Vulnerability in Years
Cognitive Dissident writes: Ars Technical is reporting a major new vulnerability in Linux. Named “Dirty Pipeline” it involves abuse of ‘pipes’ at the shell level as you might guess. The name Dirty Pipe is meant to both signal similarities to Dirty Cow and provide clues about the new vulnerability’s origins. “Pipe” refers to a pipeline, … ⌘ Read more

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A flaw was found in the way the “flags” member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system.

WOW! 😳 Who let that patch through?! 😅

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