canonical ubuntu-linux CVE-2022-0847 vulnerability in Canonical and Other Products
Published on March 10, 2022

product logo product logo product logo product logo product logo
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.

NVD

Known Exploited Vulnerability

This Linux Kernel Privilege Escalation Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Linux kernel contains an improper initialization vulnerability where an unprivileged local user could escalate their privileges on the system. This vulnerability has the moniker of "Dirty Pipe.".

The following remediation steps are recommended / required by May 16, 2022: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2022-0847 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. It has an exploitability score of 1.8 out of four. The potential impact of an exploit of this vulnerability is considered to be very high.

Improper Initialization

The software does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. This can have security implications when the associated resource is expected to have certain properties or values, such as a variable that determines whether a user has been authenticated or not.


Products Associated with CVE-2022-0847

You can be notified by stack.watch whenever vulnerabilities like CVE-2022-0847 are published in these products:

Canonical Ubuntu Linux
 
Linux Kernel
 
Fedora Project Fedora
 
Red Hat Enterprise Linux (RHEL)
 
Red Hat Enterprise Linux Eus
 
Red Hat Enterprise Linux Ibm Z Systems
 
Red Hat Enterprise Linux Ibm Z Systems Eus
 
Red Hat Enterprise Linux Power Little Endian
 
Red Hat Enterprise Linux Power Little Endian Eus
 
Red Hat Enterprise Linux For Real Time
 
Red Hat Enterprise Linux Real Time Nfv
 
Red Hat Enterprise Linux Real Time Nfv Tus
 
Red Hat Enterprise Linux Real Time Tus
 
Red Hat Enterprise Linux Server Aus
 
Red Hat Enterprise Linux Server Power Little Endian Update Services Sap Solutions
 
Red Hat Enterprise Linux Server Tus
 
Red Hat Enterprise Linux Server Update Services Sap Solutions
 
Ovirt Engine
 

What versions are vulnerable to CVE-2022-0847?

Each of the following must match for the vulnerability to exist.

Each of the following must match for the vulnerability to exist.

Each of the following must match for the vulnerability to exist.

Each of the following must match for the vulnerability to exist.

Each of the following must match for the vulnerability to exist.

Each of the following must match for the vulnerability to exist.

Each of the following must match for the vulnerability to exist.

Each of the following must match for the vulnerability to exist.

Each of the following must match for the vulnerability to exist.

Each of the following must match for the vulnerability to exist.

Each of the following must match for the vulnerability to exist.

Each of the following must match for the vulnerability to exist.