From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=143.255.12.172 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794162745; b=NVt0BchWR7N+DrhJ75ZYT4yaYvC26Zvp2kCf8YCVRUe/AyryWoGPMQ2TblLj+1UpzLK5 FCP6A3Q5gGdvPf2VlFAGNIIgpI3gBEuZDYhFrTFskSB9Crl4uxVsZhBi8VH2nbOA5rGuC J+I3nf3GdWGSD92uQqXHHRPN/2qIonjOwm+sFnqAYWWWRHAWfdxcRa0EIzDpa4jrYgzc1 MRso39WBbTY2RsokNWSfqQJadRYgW8sVA/T1iiIcUeaaMQgdMaxAKXa/XHAbhqghyqj1H DHRCrHIXR/xKf6bvyYDxsH0T1wTU9935N2Knmr36lq+/O0FSKxJzg+lW7l0XK0K6LcA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794162745; h=DMARC-Filter:DKIM-Signature:Received:Message-ID:From:To:Cc:Subject: In-Reply-To:References:Date:MIME-Version:Content-Type; bh=BK6vetzL9rat9eHKrTopeArt41nfOHdiT0NPE90Ad2Q=; b=BL/M6NtZm61XlnoO2M675wjyG4Wr+ojS4RxgOtaStczhqbOO4heKxlE3UE4bDP7YTZnN ONLUPj/LWoRObBKT5MBG9oGvG6zc1n57r8fBdwKyECsVzentRtmHEWJpdNN9i9MSwrjCd 1AgXMpMQkcNnLC3zUzElfH7gffmV078gbq0bJvac0c4X2LRbda3/t6UL+252IxasMM0OY qbNEvu8rqRTP0Nm3r6nqmwt7AkbbNAtTP+pfs0XvLpjzSjXgsMvLlbeRlBTz5A07/Yq4i 6d13YPrjRPKGH6j5Uvwoky/ppZGFvfAy6J8cI5FHQrEfg+DO7zCl/kWNCV6+k2GHQiA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=manguebit.org; spf=pass smtp.mailfrom=manguebit.org; dkim=pass header.d=manguebit.org header.i=@manguebit.org header.a=rsa-sha256 header.s=dkim header.b=vwvl+7KA; arc=none smtp.remote-ip=143.255.12.172 Received: from mx1.manguebit.org (mx1.manguebit.org [143.255.12.172]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8ACC6606A31C; Sun, 8 Nov 2026 18:32:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 8ACC6606A31C Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=manguebit.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=manguebit.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=manguebit.org header.i=@manguebit.org header.a=rsa-sha256 header.s=dkim header.b=vwvl+7KA DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=manguebit.org; s=dkim; h=Content-Type:MIME-Version:Date:References: In-Reply-To:Subject:Cc:To:From:Message-ID:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=BK6vetzL9rat9eHKrTopeArt41nfOHdiT0NPE90Ad2Q=; b=vwvl+7KAyai9yQg6QVFsJauHf7 goBkCLn3rwfdXHo1+ur6QoAzJLXVr++dg5sAsM6gq3mEpgPW1oeGqE2RPKMPCzysULzVByaXnY87A RsUjWIIdnXfGNzladi3g6Ljuno2Bai6NAMHNr9f6kpNd+m2/daprmjAP9DM69u1Y4kuhr2F++xGkS 26c4FQxKR1pU3tLaJGNkS+3wc8XPfz9YTG0vooHlYXfJmpsKufBYWR+8n89l3g4VqAwQ13BD/kbs+ MIL1dvazBxFyTED3bEg5sWyBri6p5vKQJTuFepWAcHH1YGI5wwwipvGAqi/LH2eV/v1tNqLM/A5le iZlnkG0A==; Received: from pc by mx1.manguebit.org with local (Exim 4.100.1) id 1xQ7gc-00000001Bkj-05wW; Sun, 08 Nov 2026 15:32:15 -0300 Message-ID: <173fb0ba5a3b968783dde74560d10bf9@manguebit.org> From: Paulo Alcantara To: liuyong , Namjae Jeon Cc: linux-cifs@vger.kernel.org, linux-kernel@vger.kernel.org, security@kernel.org Subject: Re: [PATCH 0/2] smb: client: validate ACL lengths and compare encoded SIDs In-Reply-To: <20261106104842.441067-1-pkfxxxing@gmail.com> References: <20261106104842.441067-1-pkfxxxing@gmail.com> Date: Sun, 08 Nov 2026 15:32:14 -0300 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain liuyong writes: > Hello, > > This series fixes two memory-safety issues in the CIFS/SMB3 client, > reproduced on mainline commit f66469d9905b39d2c260a15d7d6db450f4db67c1: > > 1. A zero-length security-query response can bypass the caller's minimum > and return ZERO_SIZE_PTR, causing an Oops during an ownership change. > 2. populate_new_aces() compares variable-length SIDs over the maximum > structure size, causing a KASAN out-of-bounds read during chmod. > ... Applied with MID_SID_LEN and MIN_SEC_DESC_LEN removed as there were left unused after patch 1/2.