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Vulnerabilities

Vulnerability · CVE-2022-0847

Linux Kernel Privilege Escalation Vulnerability

Published Mar 10, 2022 · catalog updated Jun 16, 2026 · Linux Kernel

Patch now

CVE-2022-0847 is in the CISA known-exploited catalog, due May 16, 2022. Confirm Linux Kernel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High7.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
92.80%
Remediation
Remediation guidance
Affected products
cpe fedoraproject/fedora · cpe linux/linux kernel · cpe netapp/h300s firmware · cpe ovirt/ovirt-engine · cpe redhat/codeready linux builder · cpe redhat/enterprise linux

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe fedoraproject/fedora35
  • cpe linux/linux kernelversion unspecified
  • cpe netapp/h300s firmwareversion unspecified
  • cpe ovirt/ovirt-engine4.4.10.2
  • cpe redhat/codeready linux builderversion unspecified
  • cpe redhat/enterprise linux8.0
  • cpe redhat/enterprise linux eus8.2
  • cpe redhat/enterprise linux eus8.4
  • cpe redhat/enterprise linux for ibm z systems8.0
  • cpe redhat/virtualization host4.0
  • vendor Linux Kernelversion unspecified

How to fix CVE-2022-0847

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2022-0847 is in the CISA known-exploited catalog, due May 16, 2022. Confirm Linux Kernel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with redhat/enterprise linux 8.0; redhat/enterprise linux eus 8.2; redhat/enterprise linux eus 8.4; redhat/enterprise linux for ibm z systems 8.0. Apply updates per vendor instructions.

What should an analyst verify?

CWE-665. EPSS 92.80%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 10, 2022 · Catalog

    Detected

    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.

  2. Apr 25, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 16, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2022-0847

    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."

    cisa.gov
  • CVE.orgVulnerability recordCVE-2022-0847

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-0847

    30-day exploitation probability 92.8%

    first.org
  • Exploit DatabasePublic exploit reference50808

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit ModulesPublic exploit moduleexploit_linux/local/cve_2022_0847_dirtypipe

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2022-0847

    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

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • VulnCheck KEVConfirmed exploitationCVE-2022-0847

    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."

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.