CVE intelligence and bounded remediation

CVE-2018-16862 — Linux Linux Kernel security vulnerability

Medium CVSS 5.5

A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after the final file truncation (removal). The new file created with the same inode may contain leftover pages from cleancache and the old file data instead of the new one.

Severity
Medium
CVSS
5.5 (3.0)
Published
2018-11-26
CISA KEV
Not currently listed
Ecosystem
linux/kernel
Weaknesses
CWE-200

Affected products

  • linux / linux_kernel
  • redhat / enterprise_linux / 7.0
  • canonical / ubuntu_linux / 14.04
  • canonical / ubuntu_linux / 16.04
  • debian / debian_linux / 8.0

Matched remediation archetype

Information disclosure and sensitive data exposure

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

Check exposure

  • Trace sensitive data through responses, errors, logs, metrics, traces, caches, exports, files, backups, and client bundles.
  • Identify affected subjects, tenants, retention windows, access controls, and downstream copies without opening unnecessary sensitive records.
  • Review metadata, timing, status, length, and existence signals as well as direct content disclosure.

Remediate safely

  • Minimize collection and output, apply field-level authorization and redaction at a centralized boundary, and return generic external errors.
  • Remove secrets and sensitive data from logs, artifacts, URLs, caches, and client-side bundles; rotate credentials that may have been exposed.
  • Update the affected component and add synthetic-data tests for response, error, observability, and export paths.

Authoritative sources

Complete CVE record and remediation plan

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