CVE-2022-33967
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.55%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.55% probability · 44th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- denx/u-boot
- Source
- vultures@jpcert.or.jp
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.