Vulnerability Description
There exists an unchecked length field in UBoot. The U-Boot DFU implementation does not bound the length field in USB DFU download setup packets, and it does not verify that the transfer direction corresponds to the specified command. Consequently, if a physical attacker crafts a USB DFU download setup packet with a `wLength` greater than 4096 bytes, they can write beyond the heap-allocated request buffer.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Denx | U-Boot | >= 2012.10, <= 2022.07 |
Related Weaknesses (CWE)
References
- https://seclists.org/oss-sec/2022/q3/41ExploitMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html
- https://seclists.org/oss-sec/2022/q3/41ExploitMailing ListThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-577017.html
FAQ
What is CVE-2022-2347?
CVE-2022-2347 is a vulnerability with a CVSS score of 7.7 (HIGH). There exists an unchecked length field in UBoot. The U-Boot DFU implementation does not bound the length field in USB DFU download setup packets, and it does not verify that the transfer direction cor...
How severe is CVE-2022-2347?
CVE-2022-2347 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-2347?
Check the references section above for vendor advisories and patch information. Affected products include: Denx U-Boot.