Out of bounds memory read on 64 bit systems

draios / sysdig

Linux system exploration and troubleshooting tool with first class support for containers

http://www.sysdig.com/

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Out of bounds memory read on 64 bit systems #1295

Open burritoaddict opened 5 years ago

burritoaddict commented 5 years ago

There's an integer truncation here when we assign the product of an unsigned long to a u32:

https://github.com/draios/sysdig/blob/123ba4d1a3bb5534ec8b92bbb10a356ff9652a5d/driver/ppm_events.c#L1109

j can now advance past what we copied from userspace leading to an out of bounds read: https://github.com/draios/sysdig/blob/123ba4d1a3bb5534ec8b92bbb10a356ff9652a5d/driver/ppm_events.c#L1127

github-actions[bot] commented 1 year ago

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