CVE-2022-34835
CWE-787Published: June 30, 2022· Updated: Jun 17, 2026
Official Description
In Das U-Boot through 2022.07-rc5, an integer signedness error and resultant stack-based buffer overflow in the "i2c md" command enables the corruption of the return address pointer of the do_i2c_md function.
Risk Analysis
Das U-Boot is affected by a stack-based buffer overflow triggered by an integer signedness error in the i2c md command. This critical vulnerability allows an attacker to corrupt the return address pointer, potentially leading to arbitrary code execution.
No public exploit is known for this vulnerability, and it is not included in the CISA KEV catalog. It is remotely exploitable with low attack complexity.
Upgrade to a version of Das U-Boot beyond 2022.07-rc5 to address the buffer overflow.
Technical Analysis
CVE-2022-34835 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (8)
Quick Facts
Related CVEs (CWE-787)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-34835 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts