Is CVE-2022-0847 being actively exploited?

Yes. CVE-2022-0847 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on April 25, 2022.

What is the CVSS score for CVE-2022-0847?

CVE-2022-0847 has a CVSS 3.1 base score of 7.8 (HIGH).

CVE-2022-0847

HIGH · CVSS 7.8CISA KEV: actively exploitedEPSS 92.8%EU EUVD: exploited

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.

Key facts

CVSS score: 7.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-665
EPSS score: 92.8% (100th percentile)
In CISA KEV: Yes, added April 25, 2022
In EU EUVD: Yes (EUVD-2022-15890)
Published: March 10, 2022
NVD last modified: June 17, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Linux Kernel Privilege Escalation Vulnerability

Added to the KEV catalog on April 25, 2022; federal remediation due May 16, 2022.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2022-15890 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 21, 2025.

View on the EU Vulnerability Database

Affected products

fedoraproject / fedora
linux / linux kernel
netapp / h300e
netapp / h300e firmware
netapp / h300s
netapp / h300s firmware
netapp / h410c
netapp / h410c firmware
netapp / h410s
netapp / h410s firmware
netapp / h500e
netapp / h500e firmware
netapp / h500s
netapp / h500s firmware
netapp / h700e
netapp / h700e firmware
netapp / h700s
netapp / h700s firmware
ovirt / ovirt-engine
redhat / codeready linux builder
redhat / enterprise linux
redhat / enterprise linux eus
redhat / enterprise linux eus
redhat / enterprise linux for ibm z systems
redhat / enterprise linux for ibm z systems eus
redhat / enterprise linux for ibm z systems eus
redhat / enterprise linux for power little endian
redhat / enterprise linux for power little endian eus
redhat / enterprise linux for power little endian eus
redhat / enterprise linux for real time
redhat / enterprise linux for real time for nfv
redhat / enterprise linux for real time for nfv tus
redhat / enterprise linux for real time for nfv tus
redhat / enterprise linux for real time tus
redhat / enterprise linux for real time tus
redhat / enterprise linux server aus
redhat / enterprise linux server aus
redhat / enterprise linux server for power little endian update services for sap solutions
redhat / enterprise linux server for power little endian update services for sap solutions
redhat / enterprise linux server for power little endian update services for sap solutions
redhat / enterprise linux server tus
redhat / enterprise linux server tus
redhat / enterprise linux server update services for sap solutions
redhat / enterprise linux server update services for sap solutions
redhat / enterprise linux server update services for sap solutions
redhat / virtualization host
siemens / scalance lpe9403
siemens / scalance lpe9403 firmware
sonicwall / sma1000
sonicwall / sma1000 firmware

Certified products that may be affected

25 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Red Hat Enterprise Linux 8 NSS Cryptographic Module - Red Hat, Inc. - FIPS 140 5513 - active
Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, LLC - FIPS 140 5461 - active
Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, Inc. - FIPS 140 5089 - active
Red Hat Enterprise Linux 8 OpenSSL Cryptographic Module - Red Hat®, Inc. - FIPS 140 4642 - historical
Red Hat Enterprise Linux 8 NSS Cryptographic Module - Red Hat®, Inc. - FIPS 140 4458 - historical

See all 25 in the Security Certifications Explorer.

References

http://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.html(Exploit, Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.html(Exploit, Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.html(Exploit, Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.html(Third Party Advisory, VDB Entry)
https://bugzilla.redhat.com/show_bug.cgi?id=2060795(Issue Tracking, Patch, Third Party Advisory)
https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf(Third Party Advisory)
https://dirtypipe.cm4all.com/(Exploit, Third Party Advisory)
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015(Third Party Advisory)
https://security.netapp.com/advisory/ntap-20220325-0005/(Third Party Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0847(US Government Resource)
https://www.suse.com/support/kb/doc/?id=000020603(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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