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 <[email protected]> --- 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
