What’s Vulnerable › Vulnerabilities

CVE-2022-34835

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-06-30 · updated 2026-06-17
• Weakness: CWE-787

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.

Affected products

• u-boot: before 2022.07; 2022.07-rc1, 2022.07-rc2, 2022.07-rc3, 2022.07-rc4, 2022.07-rc5 — fixed in 2022.07

How to fix

Upgrade to a fixed version: u-boot 2022.07. Check the vendor advisory for mitigations.

References

• https://github.com/u-boot/u-boot/commit/8f8c04bf1ebbd2f72f1643e7ad9617dafa6e5409
• https://lists.denx.de/pipermail/u-boot/2022-June/486113.html
• https://source.denx.de/u-boot/u-boot/-/commit/8f8c04bf1ebbd2f72f1643e7ad9617dafa6e5409
• https://github.com/u-boot/u-boot/commit/8f8c04bf1ebbd2f72f1643e7ad9617dafa6e5409
• https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html
• https://lists.denx.de/pipermail/u-boot/2022-June/486113.html
• https://source.denx.de/u-boot/u-boot/-/commit/8f8c04bf1ebbd2f72f1643e7ad9617dafa6e5409
• https://cert-portal.siemens.com/productcert/html/ssa-577017.html

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