CVE-2022-33967

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-07-20 · updated 2026-06-17
Weakness: CWE-787

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.

Affected products

u-boot: 2020.10-rc2, 2020.10-rc3, 2020.10-rc4, 2020.10-rc5, 2021.01, 2021.01-rc1 (+22)

References

https://jvn.jp/en/vu/JVNVU97846460/index.html
https://lists.denx.de/pipermail/u-boot/2022-June/487467.html
https://source.denx.de/u-boot/u-boot/-/commit/7f7fb9937c6cb49dd35153bd6708872b390b0a44
https://www.denx.de/project/u-boot/
https://jvn.jp/en/vu/JVNVU97846460/index.html
https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html
https://lists.denx.de/pipermail/u-boot/2022-June/487467.html
https://source.denx.de/u-boot/u-boot/-/commit/7f7fb9937c6cb49dd35153bd6708872b390b0a44
https://www.denx.de/project/u-boot/

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