Re: [PATCH] autofs - fix slab out of bounds read in getname_kernel()

[Andrew Morton]

On Tue, 03 Jul 2018 14:45:15 +0800 Ian Kent <raven@xxxxxxxxxx> wrote:

> Initial patch contributed by Tomas Bortoli.
> 
> The autofs subsystem does not check that the "path" parameter is
> present for all cases where it is required when it is passed in
> via the "param" struct.
> 
> In particular it isn't checked for the AUTOFS_DEV_IOCTL_OPENMOUNT_CMD
> ioctl command.
> 
> To solve it, modify validate_dev_ioctl() function to check that a
> path has been provided for ioctl commands that require it.
> 
> Signed-off-by: Tomas Bortoli <tomasbortoli@xxxxxxxxx>
> Signed-off-by: Ian Kent <raven@xxxxxxxxxx>
> Reported-by: syzbot+60c837b428dc84e83a93@xxxxxxxxxxxxxxxxxxxxxxxxx

So who is the primary author of this?  I'm assuming "Tomas" from the
signoff order?

The way of signifying this is to put the other author's From: line right
at the top of changelog.

I assume this is a root-only bug, so we don't need to backport the fix?