From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ferruh Yigit Subject: Re: [PATCH v7] drivers/net: fix possible overflow using strlcat Date: Wed, 20 Mar 2019 20:18:29 +0000 Message-ID: <8358b91e-4883-d478-c450-fe46dba5029f@intel.com> References: <1552570471-32372-1-git-send-email-tallurix.chaitanya.babu@intel.com> <1552912870-3526-1-git-send-email-tallurix.chaitanya.babu@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Cc: reshma.pattan@intel.com, jananeex.m.parthasarathy@intel.com, rmody@marvell.com, shshaikh@marvell.com, beilei.xing@intel.com, qi.z.zhang@intel.com, stable@dpdk.org To: Chaitanya Babu Talluri , dev@dpdk.org Return-path: In-Reply-To: <1552912870-3526-1-git-send-email-tallurix.chaitanya.babu@intel.com> Content-Language: en-US List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 3/18/2019 12:41 PM, Chaitanya Babu Talluri wrote: > strcat does not check the destination length and there might be > chances of string overflow so instead of strcat, strlcat is used. > > Fixes: 540a211084 ("bnx2x: driver core") > Fixes: e163c18a15 ("net/i40e: update ptype and pctype info") > Cc: stable@dpdk.org > > Signed-off-by: Chaitanya Babu Talluri > --- > v7: Corrected title. > v6: Updated title. > v5: Removed strcat. > v4: Corrected usage of strlcat. > v3: Instead of strncat, used strlcat. > v2: Instead of strncat, used snprintf. > --- > drivers/net/bnx2x/bnx2x.c | 5 +++-- > drivers/net/i40e/i40e_ethdev.c | 4 ++-- > 2 files changed, 5 insertions(+), 4 deletions(-) > > diff --git a/drivers/net/bnx2x/bnx2x.c b/drivers/net/bnx2x/bnx2x.c > index 26b3828e8..fe0db021c 100644 > --- a/drivers/net/bnx2x/bnx2x.c > +++ b/drivers/net/bnx2x/bnx2x.c > @@ -25,6 +25,7 @@ > #include > #include > #include > +#include > > #define BNX2X_PMD_VER_PREFIX "BNX2X PMD" > #define BNX2X_PMD_VERSION_MAJOR 1 > @@ -11741,13 +11742,13 @@ static const char *get_bnx2x_flags(uint32_t flags) > > for (i = 0; i < 5; i++) > if (flags & (1 << i)) { > - strcat(flag_str, flag[i]); > + strlcat(flag_str, flag[i], sizeof(flag_str)) The patch doesn't compile because of the missing ';' Can you please at least try to compile before sending the patch!