On Tue, Mar 26, 2019 at 2:23 AM Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > On Fri, Mar 22, 2019 at 04:43:55PM +0100, Arnd Bergmann wrote: > > From: Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx> > > > > The iowarrior driver expects at least one valid endpoint. If given > > malicious descriptors that specify 0 for the number of endpoints, > > it will crash in the probe function. Ensure there is at least > > one endpoint on the interface before using it. > > > > The full report of this issue can be found here: > > http://seclists.org/bugtraq/2016/Mar/87 > > > > Reported-by: Ralf Spenneberg <ralf@xxxxxxxxxxxxxx> > > Cc: stable <stable@xxxxxxxxxxxxxxx> > > Signed-off-by: Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx> > > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > > (cherry picked from commit 4ec0ef3a82125efc36173062a50624550a900ae0) > > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> > > --- > > drivers/usb/misc/iowarrior.c | 6 ++++++ > > 1 file changed, 6 insertions(+) > > This commit has been in the tree for a long time. It was in the 4.4.7 > release, back in April 2016. And then it was reverted in commit > b7321e81fc36 ("USB: iowarrior: fix NULL-deref at probe") as it broke > systems. So why add it back, the correct functionality should be there > today, right? Sorry I missed that history. The script I used to identify patches noticed that this patch was not applied, but I did not have a check for already- reverted patches. Chunyan, Baolin: it seems the spreadtrum 4.4 kernel got this wrong as well, by backporting the patch again on top of 4.4.172. Can you check the latest internal version for this? Arnd
