From: Dan Carpenter <dan.carpenter@oracle.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Arend van Spriel" <arend.vanspriel@broadcom.com>,
"freenerguo(郭大兴)" <freenerguo@tencent.com>,
"Franky Lin" <franky.lin@broadcom.com>,
"Hante Meuleman" <hante.meuleman@broadcom.com>,
"Chi-Hsien Lin" <Chi-Hsien.Lin@cypress.com>,
"Wright Feng" <Wright.Feng@cypress.com>,
"Kalle Valo" <kvalo@codeaurora.org>,
"Pieter-Paul Giesberts" <pieter-paul.giesberts@broadcom.com>,
"Rafał Miłecki" <rafal@milecki.pl>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
"brcm80211-dev-list.pdl@broadcom.com"
<brcm80211-dev-list.pdl@broadcom.com>,
brcm80211-dev-list <brcm80211-dev-list@cypress.com>,
"security@kernel.org" <security@kernel.org>
Subject: Re: [PATCH] brcmfmac: buffer overflow in brcmf_cfg80211_mgmt_tx()
Date: Fri, 7 Jul 2017 11:46:40 +0300 [thread overview]
Message-ID: <20170707084640.cv3igibbhhmgsmta@mwanda> (raw)
In-Reply-To: <CA+55aFxGacqVMDN0pETkd9Ho554wR8ACvTZhxK6p6M6CtUc_DA@mail.gmail.com>
On Thu, Jul 06, 2017 at 03:32:42PM -0700, Linus Torvalds wrote:
> On Thu, Jul 6, 2017 at 10:11 AM, Arend van Spriel
> <arend.vanspriel@broadcom.com> wrote:
> >
> > Looks fine to me so ...
>
> I really think that if we can't trust 'len', then we have to check
> against the lower bound of DOT11_MGMT_HDR_LEN too, because otherwise
> we'll just have a big 16-bit number instead.
There is already a check in cfg80211_mlme_mgmt_tx().
if (params->len < 24 + 1)
return -EINVAL;
It probably should be using DOT11_MGMT_HDR_LEN instead of a magic 24.
regards,
dan carpenter
next prev parent reply other threads:[~2017-07-07 8:48 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <88f27bfd328f4ccdb0d6b7ff7e710819@MWHPR06MB3230.namprd06.prod.outlook.com>
2017-07-06 17:11 ` [PATCH] brcmfmac: buffer overflow in brcmf_cfg80211_mgmt_tx() Arend van Spriel
2017-07-06 22:32 ` Linus Torvalds
2017-07-07 8:28 ` Arend van Spriel
2017-07-07 8:41 ` Kalle Valo
2017-07-07 8:40 ` Kalle Valo
2017-07-07 8:49 ` Dan Carpenter
2017-07-07 9:19 ` Arend van Spriel
2017-07-07 8:46 ` Dan Carpenter [this message]
2017-07-07 9:24 ` Arend van Spriel
2017-07-07 10:19 ` Dan Carpenter
2017-07-07 11:19 ` Arend van Spriel
2017-07-07 11:21 ` Arend van Spriel
[not found] <76EE61108481FC4BBFFF404FA986AA6719B8EA26@EXMBX-TJ001.tencent.com>
2017-07-06 8:41 ` Dan Carpenter
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170707084640.cv3igibbhhmgsmta@mwanda \
--to=dan.carpenter@oracle.com \
--cc=Chi-Hsien.Lin@cypress.com \
--cc=Wright.Feng@cypress.com \
--cc=arend.vanspriel@broadcom.com \
--cc=brcm80211-dev-list.pdl@broadcom.com \
--cc=brcm80211-dev-list@cypress.com \
--cc=franky.lin@broadcom.com \
--cc=freenerguo@tencent.com \
--cc=hante.meuleman@broadcom.com \
--cc=kvalo@codeaurora.org \
--cc=linux-wireless@vger.kernel.org \
--cc=pieter-paul.giesberts@broadcom.com \
--cc=rafal@milecki.pl \
--cc=security@kernel.org \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).