VULNERABILITY INTELLIGENCE

CVE-2022-0847

CVSS score7.8 HIGH
EPSS probability92.80%
CISA KEVKnown exploited vulnerability
Published2022-03-10
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Known Exploited Vulnerability

Linux Kernel Privilege Escalation Vulnerability

Vendor / product: Linux / Kernel

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.

Weakness classification

  • secalert@redhat.com: CWE-665
  • nvd@nist.gov: CWE-665

Primary references