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 150C33FD964; Fri, 15 May 2026 16:05:32 +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=1778861133; cv=none; b=G9SKP9oUZ5zk9AceSBAREJ/grKsUIm4PZpM30sHMyCodNnbizS7SdsS44cpC4rgKSw1Z/7syWCZjKS4QW7cxhhKqNh8vk9BpAV757tfN+4vvspcXOg+8aSeESeMSMwPCEDmYqesMSkZ7sQl43Fzfj5gWWXon7txwJ2wvz/gwIBI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778861133; c=relaxed/simple; bh=xLdNZyVdFvI736VmJ4XhMgStWX/vqV6EwZVr/5mQIqc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JgZ8NdVdRAM1wU6jFPWKgJ0pJa4BBDMT4NYhlqcPtm3dT+7Z0bmw9iVBH8bXrGEFPgA3j8wAshOSbnCSZGDc5Y1vUH4wHQojxTMoNjJNnm3JYCoRzFyJ+3RTweiUyv3P+oE+4ZtELU+6Oycraltc8vYJrkP2Y2B56UKdqXYkbBU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=FqLfKpKL; 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="FqLfKpKL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4C7B6C2BCB0; Fri, 15 May 2026 16:05:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778861132; bh=xLdNZyVdFvI736VmJ4XhMgStWX/vqV6EwZVr/5mQIqc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FqLfKpKLXWfu1T7fY3v18mK0A+xN+7qO/ske36qYjZJtHyoyAxh3uo2OKO/pt8EKR wyor+LGVZzK4HFuH+/cw7vrz+ZZWsn5hB22uLEfgHC57opKoC09kKs61lIgfXUEeKd IeQvYJbTzZbn4YB2ypqpKlDKYMpEQ3S0ZX6c+eaU= 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 6.6 212/474] Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb() Date: Fri, 15 May 2026 17:45:21 +0200 Message-ID: <20260515154719.597712478@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260515154715.053014143@linuxfoundation.org> References: <20260515154715.053014143@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 6.6-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 @@ -1627,6 +1627,9 @@ static void l2cap_sock_state_change_cb(s { struct sock *sk = chan->data; + if (!sk) + return; + sk->sk_state = state; if (err)