Re: [PATCH] net/irda: handle iriap_register_lsap() allocation failure

From: Vegard Nossum <redacted>
Date: Fri, 12 Aug 2016 10:29:13 +0200

If iriap_register_lsap() fails to allocate memory, self->lsap is
set to NULL. However, none of the callers handle the failure and
irlmp_connect_request() will happily dereference it:

 ...

The bug seems to have been around since forever.

There's more problems with missing error checks in iriap_init() (and
indeed all of irda_init()), but that's a bigger problem that needs
very careful review and testing. This patch will fix the most serious
bug (as it's easily reached from unprivileged userspace).

I have tested my patch with a reproducer.

Signed-off-by: Vegard Nossum <redacted>

Applied.

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