From: Kalle Valo <kvalo@codeaurora.org>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Johannes Berg <johannes.berg@intel.com>,
linux-wireless@vger.kernel.org, kernel-janitors@vger.kernel.org,
Amir Goldstein <amir73il@gmail.com>
Subject: Re: [PATCH] wireless: airo: potential buffer overflow in sprintf()
Date: Wed, 24 Oct 2018 08:56:53 +0000 [thread overview]
Message-ID: <87sh0vsox6.fsf@codeaurora.org> (raw)
In-Reply-To: <20181024083334.a6pxsifew3iztuun@kili.mountain> (Dan Carpenter's message of "Wed, 24 Oct 2018 11:33:34 +0300")
Dan Carpenter <dan.carpenter@oracle.com> writes:
> It looks like we wanted to print a maximum of BSSList_rid.ssidLen bytes
> of the ssid, but we accidentally use "%*s" (width) instead of "%.*s"
> (precision) so if the ssid doesn't have a NUL terminator this could lead
> to an overflow.
>
> Fixes: e174961ca1a0 ("net: convert print_mac to %pM")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
> Static analsysis. Not tested.
IMHO this part (after "---" line) is important information and should be
part of commit log. I can fix that.
I'll also remove "wireless:" from the title.
--
Kalle Valo
WARNING: multiple messages have this Message-ID (diff)
From: Kalle Valo <kvalo@codeaurora.org>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Johannes Berg <johannes.berg@intel.com>,
linux-wireless@vger.kernel.org, kernel-janitors@vger.kernel.org,
Amir Goldstein <amir73il@gmail.com>
Subject: Re: [PATCH] wireless: airo: potential buffer overflow in sprintf()
Date: Wed, 24 Oct 2018 11:56:53 +0300 [thread overview]
Message-ID: <87sh0vsox6.fsf@codeaurora.org> (raw)
In-Reply-To: <20181024083334.a6pxsifew3iztuun@kili.mountain> (Dan Carpenter's message of "Wed, 24 Oct 2018 11:33:34 +0300")
Dan Carpenter <dan.carpenter@oracle.com> writes:
> It looks like we wanted to print a maximum of BSSList_rid.ssidLen bytes
> of the ssid, but we accidentally use "%*s" (width) instead of "%.*s"
> (precision) so if the ssid doesn't have a NUL terminator this could lead
> to an overflow.
>
> Fixes: e174961ca1a0 ("net: convert print_mac to %pM")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
> Static analsysis. Not tested.
IMHO this part (after "---" line) is important information and should be
part of commit log. I can fix that.
I'll also remove "wireless:" from the title.
--
Kalle Valo
next prev parent reply other threads:[~2018-10-24 8:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-24 8:33 [PATCH] wireless: airo: potential buffer overflow in sprintf() Dan Carpenter
2018-10-24 8:33 ` Dan Carpenter
2018-10-24 8:56 ` Kalle Valo [this message]
2018-10-24 8:56 ` Kalle Valo
2018-10-24 9:07 ` Dan Carpenter
2018-10-24 9:07 ` Dan Carpenter
2018-10-24 9:23 ` Kalle Valo
2018-10-24 9:23 ` Kalle Valo
2018-10-24 9:26 ` Amir Goldstein
2018-10-24 9:26 ` Amir Goldstein
2018-11-06 17:03 ` Kalle Valo
2018-11-06 17:03 ` Kalle Valo
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