CVE-2022-0847

Advisory lineage Upstream: 0 Downstream: 31
Analyzed
Published: 07 Mar 2022, 00:00
Last modified:21 Oct 2025, 23:15

Vulnerability Summary

Overall Risk (default)
high
58/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
81.98% CRITICAL
82% probability -2.15%
KEV
Listed
CISA
1 listing
Ransomware
No reports
Public exploits
6 found
Dark Web
Not detected

Timeline

07 Mar 2022, 00:00
Published
Vulnerability first disclosed
25 Apr 2022, 00:00
Added to CISA KEV
Linux Kernel Privilege Escalation Vulnerability
16 May 2022, 00:00
CISA Remediation Due
Apply updates per vendor instructions.
21 Oct 2025, 23:15
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 81.98%• Percentile: 99%

Techniques & Countermeasures

  • CWE-665•Improper Initialization

    The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.

Affected Systems

  • fedoraproject•fedora

    35

  • linux•linux_kernel

    ≥ 5.8, < 5.10.102 | ≥ 5.15, < 5.15.25 | ≥ 5.16, < 5.16.11

  • netapp•h300e_firmware

    na

  • netapp•h300s_firmware

    na

  • netapp•h410c_firmware

    na

  • netapp•h410s_firmware

    na

  • netapp•h500e_firmware

    na

  • netapp•h500s_firmware

    na

  • netapp•h700e_firmware

    na

  • netapp•h700s_firmware

    na

  • ovirt•ovirt-engine

    4.4.10.2

  • redhat•codeready_linux_builder

    na

  • redhat•enterprise_linux

    8.0

  • redhat•enterprise_linux_eus

    8.2 | 8.4

  • redhat•enterprise_linux_for_ibm_z_systems

    8.0

  • redhat•enterprise_linux_for_ibm_z_systems_eus

    8.2 | 8.4

  • redhat•enterprise_linux_for_power_little_endian

    8.0

  • redhat•enterprise_linux_for_power_little_endian_eus

    8.2 | 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 | 8.4

  • redhat•enterprise_linux_for_real_time_tus

    8.2 | 8.4

  • redhat•enterprise_linux_server_aus

    8.2 | 8.4

  • redhat•enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions

    8.1 | 8.2 | 8.4

  • redhat•enterprise_linux_server_tus

    8.2 | 8.4

  • redhat•enterprise_linux_server_update_services_for_sap_solutions

    8.1 | 8.2 | 8.4

  • redhat•virtualization_host

    4.0

  • siemens•scalance_lpe9403_firmware

    < 2.0

  • sonicwall•sma1000

    ≤ 12.4.2-02044

References (11)