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Fri, 05 Dec 2025 09:56:07 -0800 (PST) Received: from localhost.localdomain ([2401:4900:8839:f626:f539:b6d1:1913:1426]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-29dae4d3b5dsm54459245ad.40.2025.12.05.09.55.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Dec 2025 09:56:06 -0800 (PST) Received: (nullmailer pid 619889 invoked by uid 1000); Fri, 05 Dec 2025 17:53:27 -0000 From: Kathara Sasikumar To: alex.aring@gmail.com Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, david.hunter.linux@gmail.com, linux-bluetooth@vger.kernel.org, linux-wpan@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, shuah@kernel.org, skhan@linuxfoundation.org, katharasasikumar007@gmail.com Subject: [PATCH] net: 6lowpan: replace sprintf() with scnprintf() in debugfs Date: Fri, 5 Dec 2025 17:53:24 +0000 Message-ID: <20251205175324.619870-1-katharasasikumar007@gmail.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" sprintf() does not perform bounds checking on the destination buffer and is deprecated in the kernel as documented in Documentation/process/deprecated.rst. Replace it with scnprintf() to ensure the write stays within bounds. No functional change intended. Signed-off-by: Kathara Sasikumar --- 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_devi= ce *dev, if (WARN_ON_ONCE(id >=3D LOWPAN_IPHC_CTX_TABLE_SIZE)) return; =20 - sprintf(buf, "%d", id); + scnprintf(buf, sizeof(buf), "%d", id); =20 root =3D debugfs_create_dir(buf, ctx); =20 --=20 2.51.0