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.
The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.
| Link | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2060795 | issue tracking third party advisory patch |
| https://dirtypipe.cm4all.com/ | third party advisory exploit |
| http://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.html | exploit vdb entry third party advisory |
| http://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.html | exploit vdb entry third party advisory |
| http://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.html | exploit vdb entry third party advisory |
| https://www.suse.com/support/kb/doc/?id=000020603 | third party advisory |
| https://security.netapp.com/advisory/ntap-20220325-0005/ | third party advisory |
| https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf | third party advisory |
| https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015 | third party advisory |
| http://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.html | vdb entry third party advisory |