Messages in this thread | | | From | Andreas Schwab <> | Subject | Re: how to determine if the noexec stack is defined by an application | Date | Sat, 30 Jun 2007 00:15:19 +0200 |
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Arjan van de Ven <arjan@infradead.org> 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@suse.de SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different." - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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