linux-kernel - Re: [PATCH V2] net: ethernet: myricom: myri10ge: myri10ge.c: Cleaning up missing null-terminate after strncpy call

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20140813170639.GB1869@nanopsycho.orion>
Date:	Wed, 13 Aug 2014 19:06:39 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
Cc:	Hyong-Youb Kim <hykim@...i.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] net: ethernet: myricom: myri10ge: myri10ge.c:
  Cleaning up missing null-terminate after strncpy call

Mon, Aug 11, 2014 at 09:18:16PM CEST, rickard_strandqvist@...ctrumdigital.se wrote:
>Added a guaranteed null-terminate after call to strncpy.
>
>Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
>---
> drivers/net/ethernet/myricom/myri10ge/myri10ge.c |    1 +
> 1 file changed, 1 insertion(+)
>
>diff --git a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
>index f3d5d79..69c26f0 100644
>--- a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
>+++ b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
>@@ -574,6 +574,7 @@ myri10ge_validate_firmware(struct myri10ge_priv *mgp,
> 
> 	/* save firmware version for ethtool */
> 	strncpy(mgp->fw_version, hdr->version, sizeof(mgp->fw_version));
>+	mgp->fw_version[sizeof(mgp->fw_version) - 1] = '\0';

	Why not to use strlcpy?

> 
> 	sscanf(mgp->fw_version, "%d.%d.%d", &mgp->fw_ver_major,
> 	       &mgp->fw_ver_minor, &mgp->fw_ver_tiny);
>-- 
>1.7.10.4
>
>--
>To unsubscribe from this list: send the line "unsubscribe netdev" in
>the body of a message to majordomo@...r.kernel.org
>More majordomo info at  http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/