CVE-2022-0847: Linux Kernel Privilege Escalation Vulnerability

Q: How do I fix CVE-2022-0847?

linux kernel: upgrade to 5.10.102, 5.15.25, 5.16.11; fedora: mitigate or apply the listed mitigation; enterprise linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2022-0847 being exploited?

Yes. CVE-2022-0847 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

Q: What does CVE-2022-0847 affect?

CVE-2022-0847 affects linux kernel, fedora, enterprise linux. Severity is high (CVSS 7.8). 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 loc

Q: How urgent is CVE-2022-0847?

Priority 87/100. High severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; On your watchlist

Patch now

HIGH 7.8EXPLOITEDWATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2022-0847 is a high-severity flaw (CVSS 7.8) affecting linux kernel, fedora, enterprise linux, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
EPSS top 1%: very likely to be exploited
Exploited in the wild (CISA KEV)
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	92.8% (top 1%)
CISA exploited list	Yes, fix due 2022-05-16
Weakness	CWE-665
Published	2022-03-10
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: fedoraproject · linux · redhat

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-03-10 17:44 UTCPublished CVE record published
2022-04-25Exploited Added to the CISA Known Exploited Vulnerabilities list
2022-05-16Deadline CISA due date for US federal agencies to patch
2026-06-17 04:21 UTCUpdated Record last modified

linux linux kernel UPGRADE

Affected: >= 5.8 and < 5.10.102 · >= 5.15 and < 5.15.25 · >= 5.16 and < 5.16.11

Fixed in: 5.10.102, 5.15.25, 5.16.11

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

fedoraproject fedora MITIGATE

Affected: 35

Fixed in: no fixed release known

Safe to downgrade to: a release before 35

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux MITIGATE

Affected: 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux eus MITIGATE

Affected: 8.2 · 8.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux for ibm z systems MITIGATE

Affected: 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux for ibm z systems eus MITIGATE

Affected: 8.2 · 8.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · nemo · FIXED · 6.8.0-1.fc46 · FEDORA-2026-0edead723f · source

sudo dnf upgrade --advisory=FEDORA-2026-0edead723f

Fedora ELN · composer · FIXED · 2.11.1-1.eln159 · FEDORA-2026-cb4f992456 · source

sudo dnf upgrade --advisory=FEDORA-2026-cb4f992456

Ubuntu 22.04 · linux · NOT AFFECTED

Ubuntu 20.04 · linux · NOT AFFECTED

Ubuntu 24.04 · linux · NOT AFFECTED

Ubuntu 22.04 · linux-allwinner-5.19 · NOT AFFECTED

Ubuntu 20.04 · linux-aws · NOT AFFECTED

Debian 12 · linux · FIXED · 5.16.11-1

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "5.16.11-1" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · linux · FIXED · 5.16.11-1

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "5.16.11-1" && echo PATCHED || echo STILL-VULNERABLE

RHEL 8 · kernel-rt · FIXED · kernel-rt-4.18.0-348.20.1.rt7.150.el8_5

sudo dnf upgrade --advisory=RHSA-2022:0819 rpm -q kernel-rt

RHEL 8 · kernel · FIXED · kernel-4.18.0-348.20.1.el8_5

sudo dnf upgrade --advisory=RHSA-2022:0825 rpm -q kernel

RHEL 8.1 Update Services for SAP Solutions · kernel · FIXED · kernel-4.18.0-147.64.1.el8_1

sudo dnf upgrade --advisory=RHSA-2022:0823 rpm -q kernel

RHEL 8.2 Extended Update Support · kernel-rt · FIXED · kernel-rt-4.18.0-193.79.1.rt13.129.el8_2

sudo dnf upgrade --advisory=RHSA-2022:0821 rpm -q kernel-rt

RHEL 8.2 Extended Update Support · kernel · FIXED · kernel-4.18.0-193.79.1.el8_2

sudo dnf upgrade --advisory=RHSA-2022:0820 rpm -q kernel

Amazon Linux 2023 · see advisory · FIXED · ALAS2023-2023-070 · source

sudo dnf update --advisory=ALAS2023-2023-070

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: Arinerron/CVE-2022-0847-DirtyPipe-Exploit (1139 stars)
GitHub PoC: AlexisAhmed/CVE-2022-0847-DirtyPipe-Exploits (737 stars)
GitHub PoC: r1is/CVE-2022-0847 (281 stars)
Write-up: dirtypipe.cm4all.com/
GitHub PoC: 0xr1l3s/CVE-2022-0847
GitHub PoC: 2xYuan/CVE-2022-0847
Exploit-DB: Linux Kernel 5.8 < 5.16.11 - Local Privilege Escalation (DirtyPipe)
Metasploit: Dirty Pipe Local Privilege Escalation via CVE-2022-0847

Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-0847?

linux kernel: upgrade to 5.10.102, 5.15.25, 5.16.11; fedora: mitigate or apply the listed mitigation; enterprise linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-0847 being exploited?

Yes. CVE-2022-0847 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2022-0847 affect?

CVE-2022-0847 affects linux kernel, fedora, enterprise linux. Severity is high (CVSS 7.8). 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 loc

How urgent is CVE-2022-0847?

Priority 87/100. High severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; On your watchlist

Software pages

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References

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