Vulnerability in Linux Kernel

CVE-2022-0847

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.

Vulnerability class: Dirty Pipe (CVE-2022-0847)

EPSS: 0.897 (99.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2022-0847?
CVE-2022-0847 is a high-severity vulnerability in Linux Kernel, classified under Improper Initialization. CVSS score: 7.8/10. Published 2022-03-10.
How severe is CVE-2022-0847?
High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2022-0847 known to be exploited?
Yes. CVE-2022-0847 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-04-25), indicating it is being actively exploited. 558 public proof-of-concept repositories are indexed.