What is CVE-2022-0185?

CVE-2022-0185 is a high-severity vulnerability in Linux Kernel, classified under Integer Overflow or Wraparound. CVSS score: 8.4/10. Published 2022-02-11.

How severe is CVE-2022-0185?

High severity. CVSS v3 base score is 8.4 out of 10.

Is CVE-2022-0185 known to be exploited?

Yes. CVE-2022-0185 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-08-21), indicating it is being actively exploited. 107 public proof-of-concept repositories are indexed.

Integer overflow in Linux Kernel

CVE-2022-0185

A heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the supplied parameters length. An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced CAP_SYS_ADMIN privilege) local user able to open a filesystem that does not support the Filesystem Context API (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system.

Vulnerability class: Integer Overflow

Published 2022-02-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.252 (97.9th percentile), scored 2026-10-18.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.252 · newest: 0.252 · change: 0.000

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2024-08-21. 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: 2024-09-11.

Required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

Public proof-of-concept exploits

References

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Mailing List)
github.com/Crusaders-of-Rust/CVE-2022-0185 (Exploit, Third Party Advisory)
www.openwall.com/lists/oss-security/2022/01/18/7 (Patch, Mailing List, Third Party Advisory)
www.willsroot.io/2022/01/cve-2022-0185.html (Exploit, Third Party Advisory)
security.netapp.com/advisory/ntap-20220225-0003/ (Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2022-0185?: CVE-2022-0185 is a high-severity vulnerability in Linux Kernel, classified under Integer Overflow or Wraparound. CVSS score: 8.4/10. Published 2022-02-11.
How severe is CVE-2022-0185?: High severity. CVSS v3 base score is 8.4 out of 10.
Is CVE-2022-0185 known to be exploited?: Yes. CVE-2022-0185 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-08-21), indicating it is being actively exploited. 107 public proof-of-concept repositories are indexed.