Re: kernel: btrfs: check for read permission on src file in the clone ioctl

[Josh Bressers <bressers () redhat com>]

Please use CVE-2010-1636

Thanks.

-- 
    JB


----- "Eugene Teo" <eugene () redhat com> wrote:

> The existing [btrfs] code would have allowed you to clone a file that
>
> was only open for writing. Not an expected behaviour.
>
> Upstream commit:
> http://git.kernel.org/linus/5dc6416414fb3ec6e2825fd4d20c8bf1d7fe0395
>
> Reference:
> https://bugzilla.redhat.com/show_bug.cgi?id=593226
>
> I'm not requesting a CVE name for this as it did not affect any of Red
>
> Hats' supported Linux kernels.
>
> Thanks, Eugene
> -- 
> main(i) { putchar(182623909 >> (i-1) * 5&31|!!(i<7)<<6) && main(++i);
> }