From: Andrew Rybchenko <arybchenko@solarflare.com>
To: <dev@dpdk.org>
Cc: Andy Moreton <amoreton@solarflare.com>, <stable@dpdk.org>
Subject: [dpdk-dev] [PATCH 2/3] net/sfc/base: fix potential buffer overflow in Tx queue init
Date: Tue, 4 Apr 2017 13:13:26 +0100 [thread overview]
Message-ID: <1491308007-18550-2-git-send-email-arybchenko@solarflare.com> (raw)
In-Reply-To: <1491308007-18550-1-git-send-email-arybchenko@solarflare.com>
From: Andy Moreton <amoreton@solarflare.com>
Improve error checking to avoid a caller overflowing the MCDI
request buffer if the requested TXQ size was excessively large.
Coverity issue: 1305527
Fixes: e7cd430c864f ("net/sfc/base: import SFN7xxx family support")
CC: stable@dpdk.org
Signed-off-by: Andy Moreton <amoreton@solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
drivers/net/sfc/base/ef10_tx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/sfc/base/ef10_tx.c b/drivers/net/sfc/base/ef10_tx.c
index 6ad11dd..0f8e9b1 100644
--- a/drivers/net/sfc/base/ef10_tx.c
+++ b/drivers/net/sfc/base/ef10_tx.c
@@ -67,7 +67,7 @@ efx_mcdi_init_txq(
EFX_TXQ_NBUFS(enp->en_nic_cfg.enc_txq_max_ndescs));
npages = EFX_TXQ_NBUFS(size);
- if (npages > MC_CMD_INIT_TXQ_IN_DMA_ADDR_MAXNUM) {
+ if (MC_CMD_INIT_TXQ_IN_LEN(npages) > sizeof (payload)) {
rc = EINVAL;
goto fail1;
}
--
2.7.4
next prev parent reply other threads:[~2017-04-04 12:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-04 12:13 [dpdk-dev] [PATCH 1/3] net/sfc/base: fix failure path in EF10 Tx queue PIO enable Andrew Rybchenko
2017-04-04 12:13 ` Andrew Rybchenko [this message]
2017-04-04 12:13 ` [dpdk-dev] [PATCH 3/3] net/sfc/base: fix out of bounds read in VIs allocation Andrew Rybchenko
2017-04-04 13:18 ` [dpdk-dev] [dpdk-stable] [PATCH 1/3] net/sfc/base: fix failure path in EF10 Tx queue PIO enable Ferruh Yigit
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=1491308007-18550-2-git-send-email-arybchenko@solarflare.com \
--to=arybchenko@solarflare.com \
--cc=amoreton@solarflare.com \
--cc=dev@dpdk.org \
--cc=stable@dpdk.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).