How much/what hardware does the rowhammer DRAM bug affects?

jim bell jdb10987 at
Thu Sep 17 23:54:58 PDT 2015

  From: Georgi Guninski <guninski at>

On Wed, Sep 16, 2015 at 11:46:26PM -0400, grarpamp wrote:

>p. 32 of the PDF:
>.– Simple ECC (e.g., SECDED) cannot prevent all errors
>From wikipedia:  Tests show that simple ECC solutions, providing
>single-error correction and double-error detection (SECDED)
>capabilities, are not able to correct or detect all observed
>disturbance errors because some of them include more than two flipped
>bits per memory word.[1]:8[11]:32

But all single-bit and triple-bit errors are detectable by parity, and so are all double-bit errors using ECC. 

Jim Bell  
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: text/html
Size: 2581 bytes
Desc: not available
URL: <>

More information about the cypherpunks mailing list