Re: how to determine if the noexec stack is defined by an application

Arjan van de Ven <arjan@xxxxxxxxxxxxx> writes:

like this:

$ eu-readelf -l /bin/true | grep STACK
GNU_STACK 0x000000 0x00000000 0x00000000 0x000000 0x000000 RW 0x4


(replace /bin/true with the binary or library you want to check)

if it says "RW" like here, it'll have non-executable stack. If it says
"RWX" or if this line is absent entirely, the stack will be executable.

The last part is not true. Some architectures (especially newer ones)
default to non-exec stack. The absense of a GNU_STACK header represents
the default.

Andreas.

--
Andreas Schwab, SuSE Labs, schwab@xxxxxxx
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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