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CVE-2022-0847

Published: Mar 7, 2022

Modified: Oct 21, 2025

PUBLISHED

Description

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.

Vendor	Product	Versions
n/a	kernel	affected `Linux Kernel 5.17 rc6`

Weaknesses (CWE)

References

https://bugzilla.redhat.com/show_bug.cgi?id=2060795

https://dirtypipe.cm4all.com/

http://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.html

http://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.html

http://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.html

https://www.suse.com/support/kb/doc/?id=000020603

https://security.netapp.com/advisory/ntap-20220325-0005/

https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015

http://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.html

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