linux-kernel - [PATCH] edac: edac_mc_sysfs.c: Use strlcpy to Copy a C-string into a sized buffer

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>] [day] [month] [year] [list]

Message-Id: <1495825113-4408-1-git-send-email-karim.eshapa@gmail.com>
Date:   Fri, 26 May 2017 20:58:33 +0200
From:   Karim Eshapa <karim.eshapa@...il.com>
To:     bp@...en8.de
Cc:     mchehab@...nel.org, linux-edac@...r.kernel.org,
        linux-kernel@...r.kernel.org, Karim Eshapa <karim.eshapa@...il.com>
Subject: [PATCH] edac: edac_mc_sysfs.c: Use strlcpy to Copy a C-string into a sized buffer

Use strlcpy with sized buffer instead of strncpy to
avoid non NUL-terminated source strings problems.

Signed-off-by: Karim Eshapa <karim.eshapa@...il.com>
---
 drivers/edac/edac_mc_sysfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 445862d..64e2255 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -251,7 +251,7 @@ static ssize_t channel_dimm_label_store(struct device *dev,
 	if (copy_count == 0 || copy_count >= sizeof(rank->dimm->label))
 		return -EINVAL;
 
-	strncpy(rank->dimm->label, data, copy_count);
+	strlcpy(rank->dimm->label, data, copy_count);
 	rank->dimm->label[copy_count] = '\0';
 
 	return count;
@@ -530,7 +530,7 @@ static ssize_t dimmdev_label_store(struct device *dev,
 	if (copy_count == 0 || copy_count >= sizeof(dimm->label))
 		return -EINVAL;
 
-	strncpy(dimm->label, data, copy_count);
+	strlcpy(dimm->label, data, copy_count);
 	dimm->label[copy_count] = '\0';
 
 	return count;
-- 
2.7.4