The original patch, as submitted to the security email address, was not acceptable for use in the Linux kernel, as it was missing a Signed-off-by: line. The maintainer had written their own patch by the time the blog post author got around to sending their next email.
This is not true. I've sent subsequent patches to the PowerPC maintainer in private, there was no practical reason why he couldn't work with me instead of implementing his own version.
