squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a heap-based buffer overflow…

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.

Scores

EPSS (exploitation in 30 days)

0.56% · top 53% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

• Denial-of-service (DoS)
• CWE-787 (opens in a new tab)All about CWE-787 and its CVEs

Affected products

• DENX Software Engineering · U-Boot

  • affected versions from v2020.10-rc2 to v2022.07-rc5

References (5)

• https://www.denx.de/project/u-boot/ (opens in a new tab)x_refsource_MISCx_transferred
• https://lists.denx.de/pipermail/u-boot/2022-June/487467.html (opens in a new tab)x_refsource_MISCx_transferred
• https://source.denx.de/u-boot/u-boot/-/commit/7f7fb9937c6cb49dd35153bd6708872b390b0a44 (opens in a new tab)x_refsource_MISCx_transferred
• https://jvn.jp/en/vu/JVNVU97846460/index.html (opens in a new tab)x_refsource_MISCx_transferred
• https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2022-33967](https://trackcve.app/badge/CVE-2022-33967.svg)](https://trackcve.app/cve/CVE-2022-33967)

Record last updated 3 Nov 2025, 19:27 UTC.