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net: ieee802154: fix nl802154 add llsec key
commit 20d5fe2 upstream. This patch fixes a nullpointer dereference if NL802154_ATTR_SEC_KEY is not set by the user. If this is the case nl802154 will return -EINVAL. Reported-by: syzbot+ce4e062c2d51977ddc50@syzkaller.appspotmail.com Signed-off-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/r/20210221174321.14210-3-aahringo@redhat.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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