From: Axel Lin <axel.lin@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Graeme Gregory <gg@slimlogic.co.uk>,
Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>,
Samuel Ortiz <sameo@linux.intel.com>,
Liam Girdwood <lrg@slimlogic.co.uk>
Subject: [PATCH RESEND] mfd: Fix off-by-one value range checking for tps65910_i2c_write
Date: Mon, 16 May 2011 22:19:01 +0800 [thread overview]
Message-ID: <1305555542.2337.3.camel@phoenix> (raw)
If bytes == (TPS65910_MAX_REGISTER + 1), we have a buffer overflow when
doing memcpy(&msg[1], src, bytes).
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
---
drivers/mfd/tps65910.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c
index bf649cf..e318248 100644
--- a/drivers/mfd/tps65910.c
+++ b/drivers/mfd/tps65910.c
@@ -71,7 +71,7 @@ static int tps65910_i2c_write(struct tps65910 *tps65910, u8 reg,
u8 msg[TPS65910_MAX_REGISTER + 1];
int ret;
- if (bytes > (TPS65910_MAX_REGISTER + 1))
+ if (bytes > TPS65910_MAX_REGISTER)
return -EINVAL;
msg[0] = reg;
--
1.7.1
next reply other threads:[~2011-05-16 14:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-16 14:19 Axel Lin [this message]
2011-05-16 20:19 ` [PATCH RESEND] mfd: Fix off-by-one value range checking for tps65910_i2c_write Liam Girdwood
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=1305555542.2337.3.camel@phoenix \
--to=axel.lin@gmail.com \
--cc=gg@slimlogic.co.uk \
--cc=jedu@slimlogic.co.uk \
--cc=linux-kernel@vger.kernel.org \
--cc=lrg@slimlogic.co.uk \
--cc=sameo@linux.intel.com \
/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