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 81A7E1A239A for ; Wed, 31 Dec 2025 22:44:26 +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=1767221066; cv=none; b=lXe9NkWVo0jFwO5xYK8Upo0qcFsuEt+Rxkm547+4Krs+hHHlIdHudMlVjVN5d6JE6EEshebAsr6WCthcxe+HLEcomQnvZszniLb6UuYhSjjF+Lzl1UwBU4D4BwIQa5/MTRQF88t1Utv6vyweFQz3Sjg1Iqo0bFPrf2CSAYBRZwI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767221066; c=relaxed/simple; bh=0j5x1dlzfQTwh4fDE3TsPzSfQ4FuEK+wMJl+aOxqDXI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=t+j4ETqsCZ8/cJAwzqBdc158yFFmsIxX199NJkzyb7T9iR4L8CRaHtCiKXeDNlBR2Sw2XfFF3RJchH6scuKuctcfV+tTrA64tlCK/zAdUJj0hTjtJYFyGS+Lcj23dWlpxk/qBOVh4egBDxCYwfJfyMmNoTy9AyvYKU5LpsQ+u4Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ExW7TUFD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ExW7TUFD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CB5B6C113D0; Wed, 31 Dec 2025 22:44:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767221066; bh=0j5x1dlzfQTwh4fDE3TsPzSfQ4FuEK+wMJl+aOxqDXI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ExW7TUFDBiX/V7eUe8eautpIPMtmSn5HQTSmAHqgslDNhG85+DRxoH3e4bASeB7wG 0d/xfd/pNZ43P97eH/WvtzSJO6pKZ6o8G1BX/plwpvC6SKu15DTOcV2nLAG0ZCeOH3 oOoTWecKAoqjQb1+78Yx9EjO4p4F9Nujyfsk9cZ4P0qh62zPmG7rpZnC8po7OAkpqn TBiahyCTw3NBmbzLoLA7dIVFJwLFELCrGNpy7sAcf1jfkZL1mEDikf9PA2OcdGoTyy 4uioFojPIROkfO2Ev+DiFhkUrv51Bl0HX7oE+qieE/wmDFmZcj5bJgw4J8bn1dpSKv Lailrz7ukOxyw== From: Sasha Levin To: stable@vger.kernel.org Cc: Joshua Rogers , Chuck Lever , Sasha Levin Subject: [PATCH 5.15.y] svcrdma: bound check rq_pages index in inline path Date: Wed, 31 Dec 2025 17:44:24 -0500 Message-ID: <20251231224424.3631279-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <2025122934-smartness-abrasive-06be@gregkh> References: <2025122934-smartness-abrasive-06be@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Joshua Rogers [ Upstream commit d1bea0ce35b6095544ee82bb54156fc62c067e58 ] svc_rdma_copy_inline_range indexed rqstp->rq_pages[rc_curpage] without verifying rc_curpage stays within the allocated page array. Add guards before the first use and after advancing to a new page. Fixes: d7cc73972661 ("svcrdma: support multiple Read chunks per RPC") Cc: stable@vger.kernel.org Signed-off-by: Joshua Rogers Signed-off-by: Chuck Lever [ adapted rc_curpage and rq_maxpages fields to ri_pageno and RPCSVC_MAXPAGES constant ] Signed-off-by: Sasha Levin --- net/sunrpc/xprtrdma/svc_rdma_rw.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/sunrpc/xprtrdma/svc_rdma_rw.c b/net/sunrpc/xprtrdma/svc_rdma_rw.c index 50bf62f85166..bfa137ad7710 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_rw.c +++ b/net/sunrpc/xprtrdma/svc_rdma_rw.c @@ -789,6 +789,9 @@ static int svc_rdma_copy_inline_range(struct svc_rdma_read_info *info, for (page_no = 0; page_no < numpages; page_no++) { unsigned int page_len; + if (info->ri_pageno >= RPCSVC_MAXPAGES) + return -EINVAL; + page_len = min_t(unsigned int, remaining, PAGE_SIZE - info->ri_pageoff); -- 2.51.0