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CVE-2022-0847

HIGH · CVSS 7.8 · Analyzed

Published: 2022-03-10 · Updated: 2026-06-17 · Source: NVD

Vulnerability overview

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.

Severity and scoring

CVSS score
7.8 · HIGH
CVSS version
3.1
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-665

CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.

Known exploitation and remediation

Listed in CISA’s Known Exploited Vulnerabilities catalog.

Affected product
Linux · Kernel
Added to catalog
2022-04-25
Required action
Apply updates per vendor instructions.
CISA remediation due date
2022-05-16

CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.

Verify affected versions and patch availability in the vendor advisory before making changes.

Affected products and versions

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

    From (inclusive): 5.8

    Before (exclusive): 5.10.102

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

    From (inclusive): 5.15

    Before (exclusive): 5.15.25

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

    From (inclusive): 5.16

    Before (exclusive): 5.16.11

  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_real_time:8:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv:8:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv_tus:8.2:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv_tus:8.4:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_real_time_tus:8.2:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_real_time_tus:8.4:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*

  • cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:*

  • cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*

  • cpe:2.3:a:ovirt:ovirt-engine:4.4.10.2:*:*:*:*:*:*:*

  • cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*

  • cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*

  • cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*

  • cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*

  • cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*

  • cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*

  • cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*

  • cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*

  • cpe:2.3:o:siemens:scalance_lpe9403_firmware:*:*:*:*:*:*:*:*

    Before (exclusive): 2.0

  • cpe:2.3:o:sonicwall:sma1000_firmware:*:*:*:*:*:*:*:*

    Through (inclusive): 12.4.2-02044

These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.

Advisories and references

Explore official sources

Read the official NVD record ↗

Explore the CISA catalog ↗

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