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 D93A314263 for ; Tue, 25 Jul 2023 10:53:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 539D3C433C9; Tue, 25 Jul 2023 10:53:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690282426; bh=sB+XtJAYpsxpgs8eSEbivLDZHx106L5FQ9mAbaQJbvE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cCXMiImXK9V72Gew3wK3QlmP561q+NJfJAUlIlCxiXD9QYJUymM76Sj5Ov88lJ497 +aCxw9GFayq4XchzcTKGOLRrAU9v0bpy2EDxfGqcQJQMn2GA6/NdetQylTey+/QM9h pbYMmX6ukfvZxkVHkIpK+Wjygdve6vSTd1MKT4s4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Gregory Greenman , Johannes Berg , Sasha Levin Subject: [PATCH 6.4 124/227] wifi: iwlwifi: mvm: fix potential array out of bounds access Date: Tue, 25 Jul 2023 12:44:51 +0200 Message-ID: <20230725104519.946711193@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230725104514.821564989@linuxfoundation.org> References: <20230725104514.821564989@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Gregory Greenman [ Upstream commit 637452360ecde9ac972d19416e9606529576b302 ] Account for IWL_SEC_WEP_KEY_OFFSET when needed while verifying key_len size in iwl_mvm_sec_key_add(). Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230613155501.f193b7493a93.I6948ba625b9318924b96a5e22602ac75d2bd0125@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- drivers/net/wireless/intel/iwlwifi/mvm/mld-key.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mld-key.c b/drivers/net/wireless/intel/iwlwifi/mvm/mld-key.c index 8853821b37168..1e659bd07392a 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mld-key.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mld-key.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* - * Copyright (C) 2022 Intel Corporation + * Copyright (C) 2022 - 2023 Intel Corporation */ #include #include @@ -179,9 +179,14 @@ int iwl_mvm_sec_key_add(struct iwl_mvm *mvm, .u.add.key_flags = cpu_to_le32(key_flags), .u.add.tx_seq = cpu_to_le64(atomic64_read(&keyconf->tx_pn)), }; + int max_key_len = sizeof(cmd.u.add.key); int ret; - if (WARN_ON(keyconf->keylen > sizeof(cmd.u.add.key))) + if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || + keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) + max_key_len -= IWL_SEC_WEP_KEY_OFFSET; + + if (WARN_ON(keyconf->keylen > max_key_len)) return -EINVAL; if (WARN_ON(!sta_mask)) -- 2.39.2