From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 50A383ADB9A; Tue, 12 May 2026 17:46:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778607975; cv=none; b=mRqp87e35nNpg63ORdQM6YFMchwBImFnA9uj1/psM5Cot7+ASs2yU/CjiZao7VDXvhCLVOnxt3PmM2Ite34wrP1BlCaakz25+vzLwO2mOZa+R9WW1uCRIpu2CVrE6PAvvFbEREh9BeRr3XNwHRpUu0G/SbfrghTyfqVoAZizSKQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778607975; c=relaxed/simple; bh=KqOf0mL9zQ6XIAGbD+pYuOkOXcTnLQAjjH2HHGjBHIk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TA+Yeai1zDE+br2P24QjVX7d6w89e1BQDLHU+9p8T/TK/zQiZyA+/mLV00/v4RqGljji8P4aAFndhxzuE7rL8qm7V0qtQJNMQTY9qyCSrRFoA9y7nfghHjx6LsmWktPFQZ37GyX+jsNltdafsDalyyqCFgMuoTHssL9r0YwsxbM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=dBpLS8lD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="dBpLS8lD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DD0E3C2BCB0; Tue, 12 May 2026 17:46:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778607975; bh=KqOf0mL9zQ6XIAGbD+pYuOkOXcTnLQAjjH2HHGjBHIk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dBpLS8lDnvTCce6Cn+GJuU0qaB+su5gcvxNQ6UZPsbM1FeT7/8RmFfGSboyXw7xyD UZL2gd6K4fNO8iU3QnRjLVMDnP7niacFfOYQNj9vEiybv4BQInjWLWoz2FjObQzozw B+ia5M6dPN95VJ3LO3iH9hXHhpcyULorD++B83Ho= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable@kernel.org, Siwei Zhang , Luiz Augusto von Dentz Subject: [PATCH 6.12 065/206] Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_new_connection_cb() Date: Tue, 12 May 2026 19:38:37 +0200 Message-ID: <20260512173934.221056386@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260512173932.810559588@linuxfoundation.org> References: <20260512173932.810559588@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Siwei Zhang commit 0a120d96166301d7a95be75b52f843837dbd1219 upstream. Add the same NULL guard already present in l2cap_sock_resume_cb() and l2cap_sock_ready_cb(). Fixes: 80808e431e1e ("Bluetooth: Add l2cap_chan_ops abstraction") Cc: stable@kernel.org Signed-off-by: Siwei Zhang Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Greg Kroah-Hartman --- net/bluetooth/l2cap_sock.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -1467,6 +1467,9 @@ static struct l2cap_chan *l2cap_sock_new { struct sock *sk, *parent = chan->data; + if (!parent) + return NULL; + lock_sock(parent); /* Check for backlog size */