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From: Andy Green <andy@warmcat.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH 14/18] drivers: net: vdev: fix 3 x strncpy misuse
Date: Tue, 08 May 2018 12:30:38 +0800
Message-ID: <152575383848.56689.2292162671048307174.stgit@localhost.localdomain> (raw)
In-Reply-To: <152575364588.56689.3300796065057551728.stgit@localhost.localdomain>


---
 drivers/net/vdev_netvsc/vdev_netvsc.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/net/vdev_netvsc/vdev_netvsc.c b/drivers/net/vdev_netvsc/vdev_netvsc.c
index c11794137..c36ec0f9a 100644
--- a/drivers/net/vdev_netvsc/vdev_netvsc.c
+++ b/drivers/net/vdev_netvsc/vdev_netvsc.c
@@ -182,7 +182,8 @@ vdev_netvsc_foreach_iface(int (*func)(const struct if_nameindex *iface,
 		is_netvsc_ret = vdev_netvsc_iface_is_netvsc(&iface[i]) ? 1 : 0;
 		if (is_netvsc ^ is_netvsc_ret)
 			continue;
-		strncpy(req.ifr_name, iface[i].if_name, sizeof(req.ifr_name));
+		strncpy(req.ifr_name, iface[i].if_name, sizeof(req.ifr_name) - 1);
+		req.ifr_name[sizeof(req.ifr_name) - 1] = '\0';
 		if (ioctl(s, SIOCGIFHWADDR, &req) == -1) {
 			DRV_LOG(WARNING, "cannot retrieve information about"
 					 " interface \"%s\": %s",
@@ -383,7 +384,8 @@ vdev_netvsc_device_probe(const struct if_nameindex *iface,
 		DRV_LOG(DEBUG,
 			"NetVSC interface \"%s\" (index %u) renamed \"%s\"",
 			ctx->if_name, ctx->if_index, iface->if_name);
-		strncpy(ctx->if_name, iface->if_name, sizeof(ctx->if_name));
+		strncpy(ctx->if_name, iface->if_name, sizeof(ctx->if_name) - 1);
+		ctx->if_name[sizeof(ctx->if_name) - 1] = '\0';
 		return 0;
 	}
 	if (!is_same_ether_addr(eth_addr, &ctx->if_addr))
@@ -581,7 +583,8 @@ vdev_netvsc_netvsc_probe(const struct if_nameindex *iface,
 		goto error;
 	}
 	ctx->id = vdev_netvsc_ctx_count;
-	strncpy(ctx->if_name, iface->if_name, sizeof(ctx->if_name));
+	strncpy(ctx->if_name, iface->if_name, sizeof(ctx->if_name) - 1);
+	ctx->if_name[sizeof(ctx->if_name) - 1] = '\0';
 	ctx->if_index = iface->if_index;
 	ctx->if_addr = *eth_addr;
 	ctx->pipe[0] = -1;

  parent reply	other threads:[~2018-05-08  5:10 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-08  4:29 [dpdk-dev] [PATCH 00/18] Fix build on gcc8 and various bugs Andy Green
2018-05-08  4:29 ` [dpdk-dev] [PATCH 01/18] lib: ret_table: workaround hash function cast error Andy Green
2018-05-08  4:29 ` [dpdk-dev] [PATCH 02/18] drivers: bus: pci: fix strncpy dangerous code Andy Green
2018-05-08  8:57   ` Bruce Richardson
2018-05-08  4:29 ` [dpdk-dev] [PATCH 03/18] drivers: bus: dpaa: fix inconsistent struct alignment Andy Green
2018-05-08  4:29 ` [dpdk-dev] [PATCH 04/18] drivers: net: axgbe: fix broken eeprom string comp Andy Green
2018-05-08  4:29 ` [dpdk-dev] [PATCH 05/18] drivers: net: nfp: nfpcore: fix strncpy misuse Andy Green
2018-05-08  8:58   ` Bruce Richardson
2018-05-08  9:00     ` Andy Green
2018-05-08  9:03       ` Bruce Richardson
2018-05-08  4:29 ` [dpdk-dev] [PATCH 06/18] drivers: net: nfp: nfpcore fix off-by-one and no NUL on strncpy use Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 07/18] drivers: net: nfp: don't memcpy out of source range Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 08/18] drivers: net: nfp: fix buffer overflow in fw_name Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 09/18] drivers: net: qede: fix strncpy constant and NUL Andy Green
2018-05-08 17:59   ` Shaikh, Shahed
2018-05-08 19:53     ` Bruce Richardson
2018-05-08 20:02       ` Shaikh, Shahed
2018-05-08 22:07         ` Andy Green
2018-05-08 23:33           ` Shaikh, Shahed
2018-05-08  4:30 ` [dpdk-dev] [PATCH 10/18] drivers: net: qede: fix broken strncpy Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 11/18] drivers:net:sfc: fix strncpy length Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 12/18] drivers: net: sfc: fix another strncpy size and NUL Andy Green
2018-05-08  7:36   ` Andrew Rybchenko
2018-05-08  8:18     ` Andy Green
2018-05-08  9:02       ` Bruce Richardson
2018-05-08  9:08       ` Andrew Rybchenko
2018-05-08  4:30 ` [dpdk-dev] [PATCH 13/18] drivers: net: vdev: readlink inputs cannot be aliased Andy Green
2018-05-08  4:30 ` Andy Green [this message]
2018-05-08  4:30 ` [dpdk-dev] [PATCH 15/18] test-pmd: can't find include Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 16/18] app: fix sprintf overrun bug Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 17/18] app: test-bbdev: strcpy ok for allocated string Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 18/18] app: test-bbdev: strcpy ok for allocated string 2 Andy Green

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