Vulnerability · Published Jul 20, 2022 · Assigned by jpcert
CVE-2022-33967
High 7.8
In plain English
A high-severity security flaw in U-Boot from DENX Software Engineering. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.6%top 53.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | u-boot | 2022.07+dfsg-1 | DEBIAN-CVE-2022-33967 |
| Debian:13 | u-boot | 2022.07+dfsg-1 | DEBIAN-CVE-2022-33967 |
| Debian:14 | u-boot | 2022.07+dfsg-1 | DEBIAN-CVE-2022-33967 |
| Ubuntu:22.04:LTS | u-boot | 2022.01+dfsg-2ubuntu2.3 | USN-5764-1 |
| Ubuntu:22.04:LTS | u-boot | 2022.01+dfsg-2ubuntu2.3 | UBUNTU-CVE-2022-33967 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| DENX Software Engineering | U-Boot | versions from v2020.10-rc2 to v2022.07-rc5 |
References
- https://www.denx.de/project/u-boot/ x_refsource_MISC
- https://lists.denx.de/pipermail/u-boot/2022-June/487467.html x_refsource_MISC
- https://source.denx.de/u-boot/u-boot/-/commit/7f7fb9937c6cb49dd35153bd6708872b390b0a44 x_refsource_MISC
- https://jvn.jp/en/vu/JVNVU97846460/index.html x_refsource_MISC
- https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html