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CVE-2022-0847

7.8
HIGHCVSS v3.1 Base Score
81.98%
HIGH RiskEPSS (99th percentile)
KEV

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.

Published: 3/10/2022
Modified: 11/6/2025
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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Linux Kernel Privilege Escalation Vulnerability

Vendor / Product:

Linux Kernel

Required Action:

Apply updates per vendor instructions.

Due Date: 5/16/2022(OVERDUE)
Added to KEV:

4/25/2022

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2022-0847

Vulnerability Summary

CVSS v3 Score

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2 Score

7.2

AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Score (Exploitation Probability)

81.98%HIGH Exploitation Risk
99th percentile

This vulnerability has a 81.98% probability of being exploited in the next 30 days, ranking higher than 99% of all scored CVEs.

CWE Classification

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Similar SeverityHIGH