From: David Laight
> Sent: 26 September 2020 12:16
> To: 'syzbot' <[email protected]>;
> [email protected];
> [email protected]; [email protected];
> [email protected]
> Subject: RE: WARNING in __kernel_read (2)
>
> > From: syzbot <[email protected]>
> > Sent: 26 September 2020 03:58
> > To: [email protected]; [email protected];
> > [email protected];
> > [email protected]
> > Subject: WARNING in __kernel_read (2)
>
> I suspect this is calling finit_module() on an fd
> that doesn't have read permissions.
Code inspection also seems to imply that the check means
the exec() also requires read permissions on the file.
This isn't traditionally true.
suid #! scripts are particularly odd without 'owner read'
(everyone except the owner can run them!).
David
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