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([49.205.39.116]) by smtp.googlemail.com with ESMTPSA id 98e67ed59e1d1-392d534abfasm3049728a91.11.2026.08.11.02.49.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Aug 2026 02:49:40 -0700 (PDT) From: Ajith P V To: marcel@holtmann.org, luiz.dentz@gmail.com Cc: linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, Ajith P V Subject: [PATCH] Bluetooth: bnep: refactor deprecated strcpy Date: Tue, 11 Aug 2026 09:49:32 +0000 Message-ID: <20260811094932.86448-1-ajithpv.linux@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The strcpy() function is deprecated across the kernel tree and moving towards complete elimination. It provides no verification limits against buffer overflows and does not guarantee strict boundary restrictions [1][2]. Replace instances of strcpy() in `net/bluetooth/bnep/core.c` with the safer strscpy() alternative. Since both target destination blocks are statically allocated fixed-size arrays within their structure definitions, leverage the compile time sizeof() operator to explicitly pass the destination buffer capacities. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1] Link: https://github.com/KSPP/linux/issues/88 [2] Signed-off-by: Ajith P V --- net/bluetooth/bnep/core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/bnep/core.c b/net/bluetooth/bnep/core.c index f7d88c33e23e..0dde82e9a085 100644 --- a/net/bluetooth/bnep/core.c +++ b/net/bluetooth/bnep/core.c @@ -670,7 +670,7 @@ int bnep_add_connection(struct bnep_connadd_req *req, struct socket *sock) goto failed; } - strcpy(req->device, dev->name); + strscpy(req->device, dev->name, sizeof(req->device)); up_write(&bnep_session_sem); return 0; @@ -712,7 +712,7 @@ static void __bnep_copy_ci(struct bnep_conninfo *ci, struct bnep_session *s) memset(ci, 0, sizeof(*ci)); memcpy(ci->dst, s->eh.h_source, ETH_ALEN); - strcpy(ci->device, s->dev->name); + strscpy(ci->device, s->dev->name, sizeof(ci->device)); ci->flags = s->flags & valid_flags; ci->state = s->state; ci->role = s->role; -- 2.43.0