From: Andrew Rybchenko <arybchenko@solarflare.com>
To: <dev@dpdk.org>
Cc: Andy Moreton <amoreton@solarflare.com>, <stable@dpdk.org>
Subject: [dpdk-stable] [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-stable] [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-stable] [PATCH 3/3] net/sfc/base: fix out of bounds read in VIs allocation Andrew Rybchenko
2017-04-04 13:18 ` [dpdk-stable] [PATCH 1/3] net/sfc/base: fix failure path in EF10 Tx queue PIO enable Ferruh Yigit
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