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CVE-2022-0847 Design/Logic Flaw

Immediate
Remediate Within 48 Hours

CVE Information

Original CVE data

Published:
Updated:

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.

CWE: CWE-665
CVSS v27.2
AV:L/AC:L/AU:N/C:C/I:C/A:C
CVSS v37.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
https://bugzilla.redhat.com/show_bug.cgi?id=2060795
https://dirtypipe.cm4all.com/
http://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.html
http://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.html
http://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.html
https://www.suse.com/support/kb/doc/?id=000020603
https://security.netapp.com/advisory/ntap-20220325-0005/
https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015
http://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.html
Affected Vendors

Fedoraproject - (1)

Linux - (1)

Netapp - (8)

Ovirt - (1)

Redhat - (16)

Siemens - (1)

Sonicwall - (1)

Basic Analysis

Common vulnerability metrics

Vulnerabilty type as detected by PRIOnengine

Design/Logic Flaw

CVSS Scores as calculated by PRIOnengine
CVSS v27.2
AV:L/AC:L/AU:N/C:C/I:C/A:C
CVSS v37.8
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
MITRE CWE Top 25

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Exploits

Exploits are available either through exploit packs, Github repos or the world wide web in general.

Active Exploitation

Vulnerability is referenced under CISA's Known Exploited Vulnerabilities (KEV) catalog. See the KEV Catalog

Social Network Activity

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Threat Actor Activity

No sightings of the vulnerability within threat reports.

Cybersecurity Frameworks

How the vulnerability maps against various cybersecurity frameworks

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Compliance Impact

How the submited vulnerability affects compliance

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Web Application Security Frameworks

Applicable if the issue likely affects a web application

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