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Service Advisory - Dirty Pipe vulnerability (CVE-2022-0847)

Service Advisory - Dirty Pipe vulnerability (CVE-2022-0847)


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Service Advisory


Please share the following information with your technical teams.


Recently a new Linux vulnerability is being disclosed know an Dirty Pipe which allows local users to gain root privileges through publicly available exploits. It allows overwriting data in arbitrary read-only files . This leads to privilege escalation because unprivileged processes can inject code into root processes.


Severity Level 

CVSS Score: 7.8



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.

Affected Versions
Linux Kernel 5.8 and later versions, even on Android devices.


local users to gain root privileges.



fixed in Linux kernels 5.16.11, 5.15.25, and 5.10.102.

check for security updates.




We thank you for your continued cooperation and understanding.



UIT Client Services at or 416 736 5800


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