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From: Greg KH <gregkh@linuxfoundation.org>
To: Gaurav Singh <gaurav1086@gmail.com>
Cc: Jeff Dike <jdike@addtoit.com>,
	Richard Weinberger <richard@nod.at>,
	Anton Ivanov <anton.ivanov@cambridgegreys.com>,
	Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
	Yonghong Song <yhs@fb.com>, Andrii Nakryiko <andriin@fb.com>,
	John Fastabend <john.fastabend@gmail.com>,
	KP Singh <kpsingh@chromium.org>,
	Alex Dewar <alex.dewar@gmx.co.uk>,
	"open list:USER-MODE LINUX (UML)" <linux-um@lists.infradead.org>,
	open list <linux-kernel@vger.kernel.org>,
	"open list:BPF (Safe dynamic programs and tools)" 
	"open list:BPF (Safe dynamic programs and tools)" 
Subject: Re: [PATCH] Fix null pointer dereference in vector_user_bpf
Date: Wed, 10 Jun 2020 07:53:39 +0200	[thread overview]
Message-ID: <20200610055339.GA1865470@kroah.com> (raw)
In-Reply-To: <20200610034314.9290-1-gaurav1086@gmail.com>

On Tue, Jun 09, 2020 at 11:43:00PM -0400, Gaurav Singh wrote:
> Signed-off-by: Gaurav Singh <gaurav1086@gmail.com>
> The bpf_prog is being checked for !NULL after uml_kmalloc but
> later its used directly for example: 
> bpf_prog->filter = bpf and is also later returned upon success.
> Fix this, do a NULL check and return right away.
> ---
>  arch/um/drivers/vector_user.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)

No signed-off-by?

  reply	other threads:[~2020-06-10  5:53 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-10  3:43 [PATCH] Fix null pointer dereference in vector_user_bpf Gaurav Singh
2020-06-10  5:53 ` Greg KH [this message]
2020-06-11  2:40 Gaurav Singh
2020-06-14  1:19 Gaurav Singh
2020-06-14  6:38 ` Anton Ivanov

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