CVE-2022-0847

HIGH

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.

CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 3/10/2022Modified: 6/17/2026

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References (21)

http://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.htmlExploitThird Party Advisoryhttp://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.htmlExploitThird Party Advisoryhttp://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.htmlExploitThird Party Advisoryhttp://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.htmlThird Party AdvisoryVDB Entryhttps://bugzilla.redhat.com/show_bug.cgi?id=2060795Issue TrackingPatchhttps://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdfThird Party Advisoryhttps://dirtypipe.cm4all.com/ExploitThird Party Advisoryhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015Third Party Advisoryhttps://security.netapp.com/advisory/ntap-20220325-0005/Third Party Advisoryhttps://www.suse.com/support/kb/doc/?id=000020603Third Party Advisoryhttp://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.htmlExploitThird Party Advisoryhttp://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.htmlExploitThird Party Advisoryhttp://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.htmlExploitThird Party Advisoryhttp://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.htmlThird Party AdvisoryVDB Entryhttps://bugzilla.redhat.com/show_bug.cgi?id=2060795Issue TrackingPatchhttps://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdfThird Party Advisoryhttps://dirtypipe.cm4all.com/ExploitThird Party Advisoryhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015Third Party Advisoryhttps://security.netapp.com/advisory/ntap-20220325-0005/Third Party Advisoryhttps://www.suse.com/support/kb/doc/?id=000020603Third Party Advisoryhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0847US Government Resource