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Integer overflows in the led driver of the daisy-o-oss branch #973

leoaccount opened this Issue Nov 18, 2018 · 0 comments


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leoaccount commented Nov 18, 2018

There are several suspected integer overflow bugs in drivers/leds/leds-aw2023.c, line 299 & 302 & 348 & 351. The led id may be equal to or greater than the integer length (depends on the target arch), which causes integer overflow when using the left shift operation "1 << led->id". Possible solution for this case would be to cast the integer "1" to a data type of larger length before shifting it with led->id.

@leoaccount leoaccount closed this Nov 25, 2018

@leoaccount leoaccount reopened this Dec 7, 2018

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