CVE-2022-34835 : DAS U-BOOT UP TO 2022.07-RC5 I2C MD COMMAND DO_I2C_MD STACK-BASED OVERFLOW

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.

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

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