Re: CVE Request: Linux Kernel heap corruption on debug_read_tlb

[Greg KH <greg () kroah com>]

On Thu, Oct 15, 2015 at 10:30:04AM +0200, Salva Peiró wrote:
> Hello,
>
> Is there a CVE for this? If not, could one be assigned, please?
>
>      https://patchwork.kernel.org/patch/6853351/
>      commit e203db293863fa15b4b1917d4398fb5bd63c4e88
>      iommu/omap: Fix debug_read_tlb() to use seq_printf()
>
>      The debug_read_tlb() uses the sprintf() functions directly on the
> buffer
>      allocated by buf = kmalloc(count), without taking into account the size
>      of the buffer, with the consequence corrupting the heap, depending on
>      the count requested by the user.
>
>      The patch fixes the issue replacing sprintf() by seq_printf().

For a root-only-readable file?  Why is a CVE needed?

thanks,

greg k-h