CVEvulnerability

CVE-2022-0847

7.8 HIGH Known exploited Published 2022-03-10 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Linux Kernel Privilege Escalation Vulnerability — Linux Kernel

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."

Added to KEV
2022-04-25
Remediation due
2022-05-16
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2022-0847
Status
Analyzed
Published
2022-03-10
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-665

Description

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.

Affected configurations

• linux linux kernel (>= 5.8 < 5.10.102) • linux linux kernel (>= 5.15 < 5.15.25) • linux linux kernel (>= 5.16 < 5.16.11) • fedoraproject fedora 35 • 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 • redhat enterprise linux for ibm z systems eus 8.2 • redhat enterprise linux for ibm z systems eus 8.4 • redhat enterprise linux for power little endian 8.0 • redhat enterprise linux for power little endian eus 8.2 • redhat enterprise linux for power little endian eus 8.4 • redhat enterprise linux for real time 8 • redhat enterprise linux for real time for nfv 8 • redhat enterprise linux for real time for nfv tus 8.2 • redhat enterprise linux for real time for nfv tus 8.4 • redhat enterprise linux for real time tus 8.2 • redhat enterprise linux for real time tus 8.4 • redhat enterprise linux server aus 8.2 • redhat enterprise linux server aus 8.4 • redhat enterprise linux server for power little endian update services for sap solutions 8.1 • redhat enterprise linux server for power little endian update services for sap solutions 8.2 • redhat enterprise linux server for power little endian update services for sap solutions 8.4 • redhat enterprise linux server tus 8.2 • redhat enterprise linux server tus 8.4 • redhat enterprise linux server update services for sap solutions 8.1 • redhat enterprise linux server update services for sap solutions 8.2 • redhat enterprise linux server update services for sap solutions 8.4 • redhat codeready linux builder • redhat virtualization host 4.0 • ovirt ovirt-engine 4.4.10.2 • netapp h300s firmware • netapp h500s firmware • netapp h700s firmware • netapp h300e firmware • netapp h500e firmware • netapp h700e firmware • netapp h410s firmware • netapp h410c firmware • siemens scalance lpe9403 firmware (< 2.0) • sonicwall sma1000 firmware (<= 12.4.2-02044)

Related

Weakness · CWE (1)

  • CWE-665 Improper Initialization weakness

References