CVE-2022-3910

Name: CVE-2022-3910
Creator: NVD / NIST
Published: 2022-11-22T13:15:13.167+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.01%

Last modified Jun 17, 2026

CVE-2022-3910 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Use After Free vulnerability in Linux Kernel allows Privilege Escalation. An improper Update of Reference Count in io_uring leads to Use-After-Free and Local Privilege Escalation. When io_msg_ring was invoked with a fixed file, it called io_fput_file() which improperly decreased its reference count (leading to Use-After-Free and Local Privilege Escalation). EPSS estimates a 1.01% chance of exploitation in the next 30 days.

Description

Use After Free vulnerability in Linux Kernel allows Privilege Escalation. An improper Update of Reference Count in io_uring leads to Use-After-Free and Local Privilege Escalation. When io_msg_ring was invoked with a fixed file, it called io_fput_file() which improperly decreased its reference count (leading to Use-After-Free and Local Privilege Escalation). Fixed files are permanently registered to the ring, and should not be put separately. We recommend upgrading past commit https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679 https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.01%

58.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	>= 5.18, < 5.19.11	—
Linux	Linux Kernel	6.0	Rc1

References

https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679Patch, Third Party Advisory
https://kernel.dance/#fc7222c3a9f56271fba02aabbfbae999042f1679Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679Patch, Third Party Advisory
https://kernel.dance/#fc7222c3a9f56271fba02aabbfbae999042f1679Patch, Third Party Advisory

Timeline

Published: Nov 22, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-3910?

How severe is CVE-2022-3910?

CVE-2022-3910 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.01% probability of exploitation in the next 30 days.

How do I fix CVE-2022-3910?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-3910?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST