CVE intelligence and bounded remediation

CVE-2022-0847 — Linux Kernel Privilege Escalation Vulnerability

High CVSS 7.8 CISA KEV

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
High
CVSS
7.8 (3.1)
Published
2022-03-10
CISA KEV
Known exploited
Ecosystem
linux/kernel
Weaknesses
CWE-665

Affected products

  • linux / linux_kernel
  • 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

Showing 6 representative product identities from 42 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

General vulnerability remediation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.