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 5D22817CA1F; Sun, 1 Sep 2024 16:59:20 +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=1725209960; cv=none; b=cU25Grg4pUjhakZHDCrzzgitnB1745QxMV+YSLfZ8NYJXFJfql//5UcJcWCebotS7gs47Bbb2d+yduOd41L06CLZgZ6mGTLUBnx79HBiDVKCPGpr4AIrqbKvalO+5TbB1qa3FQSXxzuns+vO0f9acjjW/LbwW1YwDi5lM0dSHVc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725209960; c=relaxed/simple; bh=8xVqrzt47xz0qaUPoI1FwDdcNAl0gurnp6c5NY6ubLg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nszy0bSacRlcL3nCpuh1LdfSsd6p+3lQVwCTqrfU1iNlVBO3Z1p/ZJqNcTq6gvCA1cydjVSKCrJblC13u2xbqzFNVVzaGzL7P8IYIwtlwZo3+M+AD/pgchW830w3cTKr+VcTeVYPcoaVq9AKF54dOVuT9QhSG6ekzl9UzEbhvP8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=N9uajUFA; 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="N9uajUFA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CB266C4CEC3; Sun, 1 Sep 2024 16:59:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1725209960; bh=8xVqrzt47xz0qaUPoI1FwDdcNAl0gurnp6c5NY6ubLg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=N9uajUFA8r2kGHooU6C37IpdGkyGjiiaTbj/1mkG1g3tIBd3yML+F4Qc7oD5aQab2 xSi3+Thj12+ovTZT4AxqFudqWXyQOyFQUclUGoeNSd6yaXT75somjG7bN4r47cqwb+ CFBqUPcUbIED+nhjNhL1mlpKpwr/hzEy4XjY9t0o= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jeff Johnson , Kalle Valo , Sasha Levin Subject: [PATCH 5.15 046/215] wifi: cw1200: Avoid processing an invalid TIM IE Date: Sun, 1 Sep 2024 18:15:58 +0200 Message-ID: <20240901160825.091019872@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240901160823.230213148@linuxfoundation.org> References: <20240901160823.230213148@linuxfoundation.org> User-Agent: quilt/0.67 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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jeff Johnson [ Upstream commit b7bcea9c27b3d87b54075735c870500123582145 ] While converting struct ieee80211_tim_ie::virtual_map to be a flexible array it was observed that the TIM IE processing in cw1200_rx_cb() could potentially process a malformed IE in a manner that could result in a buffer over-read. Add logic to verify that the TIM IE length is large enough to hold a valid TIM payload before processing it. Signed-off-by: Jeff Johnson Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20230831-ieee80211_tim_ie-v3-1-e10ff584ab5d@quicinc.com Signed-off-by: Sasha Levin --- drivers/net/wireless/st/cw1200/txrx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/st/cw1200/txrx.c b/drivers/net/wireless/st/cw1200/txrx.c index 7de666b90ff50..9c998f4ac4a9a 100644 --- a/drivers/net/wireless/st/cw1200/txrx.c +++ b/drivers/net/wireless/st/cw1200/txrx.c @@ -1170,7 +1170,7 @@ void cw1200_rx_cb(struct cw1200_common *priv, size_t ies_len = skb->len - (ies - (u8 *)(skb->data)); tim_ie = cfg80211_find_ie(WLAN_EID_TIM, ies, ies_len); - if (tim_ie) { + if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) { struct ieee80211_tim_ie *tim = (struct ieee80211_tim_ie *)&tim_ie[2]; -- 2.43.0