CVE-2022-33967

Name: CVE-2022-33967
Creator: NVD / NIST
Published: 2022-07-20T07:15:08.667+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.52%

Last modified Jun 17, 2026

CVE-2022-33967 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a heap-based buffer overflow vulnerability due to a defect in the metadata reading process. Loading a specially crafted squashfs image may lead to a denial-of-service (DoS) condition or arbitrary code execution.. EPSS estimates a 0.52% chance of exploitation in the next 30 days.

Description

squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a heap-based buffer overflow vulnerability due to a defect in the metadata reading process. Loading a specially crafted squashfs image may lead to a denial-of-service (DoS) condition or arbitrary code execution.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.52%

39.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions	Update
Denx	U-Boot	2020.10	Rc2
Denx	U-Boot	2021.01	—
Denx	U-Boot	2021.04	Rc1
Denx	U-Boot	2022.01	—
Denx	U-Boot	2022.04	—
Denx	U-Boot	2022.07	Rc1

References

https://jvn.jp/en/vu/JVNVU97846460/index.htmlThird Party Advisory
https://lists.denx.de/pipermail/u-boot/2022-June/487467.htmlExploit, Mailing List, Vendor Advisory
https://source.denx.de/u-boot/u-boot/-/commit/7f7fb9937c6cb49dd35153bd6708872b390b0a44Patch, Third Party Advisory, Vendor Advisory
https://www.denx.de/project/u-boot/Product
https://jvn.jp/en/vu/JVNVU97846460/index.htmlThird Party Advisory
https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html
https://lists.denx.de/pipermail/u-boot/2022-June/487467.htmlExploit, Mailing List, Vendor Advisory
https://source.denx.de/u-boot/u-boot/-/commit/7f7fb9937c6cb49dd35153bd6708872b390b0a44Patch, Third Party Advisory, Vendor Advisory
https://www.denx.de/project/u-boot/Product

Timeline

Published: Jul 20, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-33967?

How severe is CVE-2022-33967?

CVE-2022-33967 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.

How do I fix CVE-2022-33967?

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-2022-33967?

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

Scan your code now

Source: NVD / NIST