[PATCH v2 net-next] net: 6lowpan: replace sprintf() with scnprintf() in debugfs

[Kathara Sasikumar]

sprintf() does not perform bounds checking on the destination buffer.
Replace it with scnprintf() to ensure the write stays within bounds.

No functional change intended.

Signed-off-by: Kathara Sasikumar <katharasasikumar007@xxxxxxxxx>
---
v2:
 - Updated commit message wording
 - Targeted the patch to net-next
---
 net/6lowpan/debugfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/6lowpan/debugfs.c b/net/6lowpan/debugfs.c
index 600b9563bfc5..d45ace484143 100644
--- a/net/6lowpan/debugfs.c
+++ b/net/6lowpan/debugfs.c
@@ -173,7 +173,7 @@ static void lowpan_dev_debugfs_ctx_init(struct net_device *dev,
 	if (WARN_ON_ONCE(id >= LOWPAN_IPHC_CTX_TABLE_SIZE))
 		return;
 
-	sprintf(buf, "%d", id);
+	scnprintf(buf, sizeof(buf), "%d", id);
 
 	root = debugfs_create_dir(buf, ctx);
 
-- 
2.51.0