[PATCH] arm64: mm: Mark .rodata as RO
laura at labbott.name
Tue Feb 16 10:48:31 PST 2016
On 2/16/16 10:10 AM, Kees Cook wrote:
> On Fri, Feb 12, 2016 at 10:25 AM, Mark Rutland <mark.rutland at arm.com> wrote:
>> On Fri, Feb 12, 2016 at 10:13:19AM -0600, Jeremy Linton wrote:
>>> Currently the .rodata section is actually still executable when DEBUG_RODATA
>>> is enabled. This changes that so the .rodata is actually read only, no execute.
>>> Signed-off-by: Jeremy Linton <jeremy.linton at arm.com>
> Yikes, good catch. Is anyone running the lkdtm tests that check these things?
I don't think the current lkdtm test would have caught this since the exec
test is using rw data and not ro data. That test could be expanded though
to include a rodata buffer as well.
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