Re: Passing pointers as UIDs | kernel<->userspace communication
Re: Passing pointers as UIDs | kernel<->userspace communication
- Subject: Re: Passing pointers as UIDs | kernel<->userspace communication
- From: comex <email@hidden>
- Date: Tue, 18 Sep 2012 17:50:57 -0400
On Tue, Sep 18, 2012 at 5:48 PM, comex <email@hidden> wrote:
> On Tue, Sep 18, 2012 at 5:22 PM, Jean Suisse <email@hidden> wrote:
> That's not sufficient: for an attacker to even know the value of the
> heap pointer compromises KASLR
Er, and that's assuming that "only the kernel can write to the
structure" means that only kernel-originated requests can modify or
delete the structure. If user requests are allowed to modify it, as
you said in your original message, it's pretty much an immediate game
over.
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