--- title: "CVE-2022-0847: Improper Initialization | CubePath" 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…" language: en source: https://cubepath.com/security/cve/CVE-2022-0847 --- # CVE-2022-0847: Improper Initialization | CubePath ## 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. Official description from the CVE record, published by redhat. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2022-0847) ## Key data ### CVSS 3.1 High 7.8 Score published by CISA-ADP in the CVE record. CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Metric | Value | What it means | | ---------------------- | --------- | ----------------------------------------------------------------------------------------- | | Attack vector | Local | The attacker needs local access to the system, or to trick a user into running something. | | Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. | | Privileges required | Low | A basic user account is needed. | | User interaction | None | No action from any user is needed. | | Scope | Unchanged | The impact stays within the vulnerable component. | | Confidentiality impact | High | Serious or total effect on the secrecy of data. | | Integrity impact | High | Serious or total effect on the trustworthiness of data. | | Availability impact | High | Serious or total effect on availability. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.92795 (92.8% probability) Percentile 99.8% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA Known Exploited Vulnerabilities This CVE is listed in the CISA KEV catalog. Name in the catalog Linux Kernel Privilege Escalation Vulnerability Added to the catalog Apr 25, 2022 Federal due date May 16, 2022 ### CISA assessment as of Feb 4, 2025 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Exploitation Recorded by CISA as active Automatable no Technical impact total ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-665](https://cwe.mitre.org/data/definitions/665.html) Improper Initialization ## Affected products Products listed in the CVE record, as the CNA published them. - kernel - affected: Linux Kernel 5.17 rc6 ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [bugzilla.redhat.com/show\_bug.cgi?id=2060795](https://bugzilla.redhat.com/show%5Fbug.cgi?id=2060795) - [dirtypipe.cm4all.com](https://dirtypipe.cm4all.com/) - [packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary…](http://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.html) - [packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privi…](http://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.html) - [packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privi…](http://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.html) - [suse.com/support/kb/doc/?id=000020603](https://www.suse.com/support/kb/doc/?id=000020603) - [security.netapp.com/advisory/ntap-20220325-0005](https://security.netapp.com/advisory/ntap-20220325-0005/) - [cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf](https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf) - [psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015](https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015) - [packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-O…](http://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.html) ## Timeline 1. ID reserved Mar 3, 2022 2. Record published Mar 7, 2022 3. Added to CISA KEV Apr 25, 2022 4. Record last updated Oct 21, 2025 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:01 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)