What is CVE-2022-1786?

CVE-2022-1786 is a high-severity vulnerability in Linux Kernel, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 7.8/10. Published 2022-06-02.

How severe is CVE-2022-1786?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2022-1786 known to be exploited?

24 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Linux Kernel

CVE-2022-1786

A use-after-free flaw was found in the Linux kernel’s io_uring subsystem in the way a user sets up a ring with IORING_SETUP_IOPOLL with more than one task completing submissions on this ring. This flaw allows a local user to crash or escalate their privileges on the system.

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

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.

EPSS exploit prediction

EPSS: 0.010 (62.2th percentile), scored 2026-10-04.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: +0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
www.debian.org/security/2022/dsa-5161 (vendor-advisory, Third Party Advisory)
security.netapp.com/advisory/ntap-20220722-0001/ (Third Party Advisory)

Frequently asked questions

What is CVE-2022-1786?: CVE-2022-1786 is a high-severity vulnerability in Linux Kernel, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 7.8/10. Published 2022-06-02.
How severe is CVE-2022-1786?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2022-1786 known to be exploited?: 24 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.