From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 59E7D332EA7; Sat, 30 May 2026 16:59:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780160366; cv=none; b=uItwxAVh/YGLtOk54ACdCWyeGKR9xO9E3n1ig1KRAqg3aaTnPz6+T+QB/k8SnOxoCK4llwugJqr06/e0IYmP4UoR1heyJ8WCieunQlCpW+K1ko5leIkZIg9mXiAX45ZzVUx84OZLMTd2crWodRWBa0p9JuftbqBcxMihsrYi1ZE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780160366; c=relaxed/simple; bh=5VIdEr81m8qpuMVbLhYGHjxnvVj2B21zaTEQ9d2mIIc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UIYZCaZcu97VBuWIzr7tAcAv1P2zq10AAegOhdTIEYtAQuPt/PdXZdJOfotSMsBW2tGMyjAIY1Fnzi/uOHyvd/gXQD+5Trt+tpG9P+9DACaQvwuhLLtn8VTlg7vYvNkLPqXfAw2Ja329pIimL0Uz6TcXLmfGPDUskD5HwIoQnmE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Xg2BtSPA; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Xg2BtSPA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7003A1F00893; Sat, 30 May 2026 16:59:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780160365; bh=8O7Bpn3nIofmU72KC6qy1me8huTW3PR/D5lHILnRvzU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Xg2BtSPA9qL7sku6b2wUqHeWL8/UFOij6GueAzb6waliRAqzNbDZ1ph4Ho5vKa4Jk qbVzYPRKBAh5TDGgoMsb6o0QXej+65y9mNOAwu0XfqHMsRkiPq2O5RU51jRwrYod7l qzl2RtRNr1l4Dr0x9hM32U6fOSekMG3WRSN+uYzE= 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 6.1 319/969] Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb() Date: Sat, 30 May 2026 17:57:23 +0200 Message-ID: <20260530160309.214914330@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260530160300.485627683@linuxfoundation.org> References: <20260530160300.485627683@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Siwei Zhang commit 2ff1a41a912de8517b4482e946dd951b7d80edbf upstream. Add the same NULL guard already present in l2cap_sock_resume_cb() and l2cap_sock_ready_cb(). Fixes: 89bc500e41fc ("Bluetooth: Add state tracking to struct l2cap_chan") 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 @@ -1663,6 +1663,9 @@ static void l2cap_sock_state_change_cb(s { struct sock *sk = chan->data; + if (!sk) + return; + sk->sk_state = state; if (err)