From nobody Sun Feb 8 14:31:38 2026 Received: from mail-wr1-f48.google.com (mail-wr1-f48.google.com [209.85.221.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CA4101DDC0B for ; Fri, 7 Feb 2025 09:16:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.48 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738919786; cv=none; b=eiGxTlJWINcML8loEuCluv+OsRvbv5Qg8LkYPeLred8hAfJ6FTIqeFzlk4zLJ1l0ZPlv6D6iIMaRNEyjzrJODEItcFnMPpRvndW4CyGF5rHzQKgzpCKcm213jozTS4y4RYeE49o1641FsLlCfLGy13LixWcDS8YCt1DX8xSxgog= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738919786; c=relaxed/simple; bh=8QyhjSt+PXmG79JqqMzYxvWUPvnaR1/TlhVoEt5+boM=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=d+kqMSc3DvDvByra5Ue273e5IwMcr+N0tQ67SrJvcn6EL8DO0tMqrlbc8keZCGSSwHeWcPjfzmd6IJ+gHE3XY8GTfxdWVLVTOzJdK67u+IU0PGmrafjftxjkDdeZ7bfDxoO4eBcZ7Or0nPhNIsQOynFDn44pQnuBHEsknMLGxmA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=rEfuvVzJ; arc=none smtp.client-ip=209.85.221.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="rEfuvVzJ" Received: by mail-wr1-f48.google.com with SMTP id ffacd0b85a97d-38dc627eba6so675630f8f.2 for ; Fri, 07 Feb 2025 01:16:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1738919783; x=1739524583; darn=vger.kernel.org; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :from:to:cc:subject:date:message-id:reply-to; bh=vvLbUtxX6Is1AqBp8WxV0jhxtX114UxVQqr6c6sxU+8=; b=rEfuvVzJaugBmbO1ALFHHOKtedha/I3DKWGnXzXrsyODjKqCWZlu28q9j8b4cyUpc9 b0leMaD7xx/qHCTYdURVKfF4E7/UtBJd4/eAC4UFFT9vbl2CrVu74q/Ks1iYUSHp4KZk 5XJJ0iKczoiohEHsDJnavZJKLIeCtJLZQQ1kRsxyreaysn3zoGMI5w5eQUzhB1d3Jfmp +27hrAO18exGrdY0nIdnERfjHfTMCO1tfEKm7VKRkEzE58e1tl1RR5vlwQZZ4jMQiohN xvOMQKX1KNigz25GtoQA74Pa3Tcro+vQvL9fZiSs5eli9585J/eTw067p6Ebxpm3Tfhw Pq1Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1738919783; x=1739524583; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=vvLbUtxX6Is1AqBp8WxV0jhxtX114UxVQqr6c6sxU+8=; b=oTjmaKAPPcNqcBaaVz02Gdhr96fDIdM+dgzs0Bqq7OMURofRj2QUWi0M4L4R5BwIs4 CN10aHxct/9erYUQhdIGrMWM5OnZzCPckUxfVu+qVKXKVmNpQ82ee6ermibGXh+k0aI1 DjRfhP6MQnAn71fkOKRl+BpDjnbEnjNhLdX+AFVkLC0whjQ2ChqH4ISCluuYgP2nDQJ+ L1n3RtyVUsgQLOWpg+yAYQQwLK9XyenFBOplcG67nACdZ43cEySRR4wqrS9YVCx7m8c6 ZSizCq6x4mLgDTjV1M6F2WwNRxpU10S1IAVrhidsWjtSX2Y4sHoZZUCOy+gZ8gOWL87K zk8g== X-Forwarded-Encrypted: i=1; AJvYcCVw3FKYvhjfqNVWvnuMX2vTrvC1Ye5PlqEPHAWyoVBcPT7jCVWwp7aXdgjvjpgr3iK8JggCcP344aoGS30=@vger.kernel.org X-Gm-Message-State: AOJu0Yy++oD6ElzTOBevyb/rezVpkVULS5RGqR72gRxja+Gr0gcetx7f 0dpPEmJHSz5V9+6+DuGklH7DVOq509n9AXlt/e+idspGqfhbnCqVLjgm+PSSJog= X-Gm-Gg: ASbGnctu0CVCWI70BcfFgmmHewOE7D+XFSZIGhkz+lWJw0ipi2LJ+bdygx1XztP89A2 IXL/otL+yARao9589NcSDBxSOoTjMuJ/abRqc52DuMRlj613aXCopiK8+lrDLuV6666/8mQ4R5u uKPR3TZKBDSWj1ftJHJjcDiBUipnw2VL29DR5xlX1+C7mydztCR5VsB8zp6ON2yTRAOXEy03Jhm ML4G3w4hi5nnZM7sDCnjAHI6nlvbkJzBttC+WXnd33MCj1RbxlMhTw32hd/4EdGtjbBcZFAEFHy xsYmW1wS/W7Jqw8qXWv9 X-Google-Smtp-Source: AGHT+IHzf8MzMXdkrcAtuah1r8BuF90slZNj+eI0Wnjcj38CkfEtHceBBNaIgCqFjXafoOn3pJtT+w== X-Received: by 2002:a5d:64c3:0:b0:38d:c58f:4cfd with SMTP id ffacd0b85a97d-38dc8914130mr1679493f8f.0.1738919783039; Fri, 07 Feb 2025 01:16:23 -0800 (PST) Received: from localhost ([196.207.164.177]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-38dbdd5c87csm4012010f8f.52.2025.02.07.01.16.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Feb 2025 01:16:22 -0800 (PST) Date: Fri, 7 Feb 2025 12:16:19 +0300 From: Dan Carpenter To: Selvin Xavier Cc: Kalesh AP , Jason Gunthorpe , Leon Romanovsky , linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH next] RDMA/bnxt_re: Fix buffer overflow in debugfs code Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add some bounds checking to prevent memory corruption in bnxt_re_cc_config_set(). This is debugfs code so the bug can only be triggered by root. Fixes: 656dff55da19 ("RDMA/bnxt_re: Congestion control settings using debug= fs hook") Signed-off-by: Dan Carpenter Acked-by: Selvin Xavier --- drivers/infiniband/hw/bnxt_re/debugfs.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/infiniband/hw/bnxt_re/debugfs.c b/drivers/infiniband/h= w/bnxt_re/debugfs.c index f4dd2fb51867..d7354e7753fe 100644 --- a/drivers/infiniband/hw/bnxt_re/debugfs.c +++ b/drivers/infiniband/hw/bnxt_re/debugfs.c @@ -285,6 +285,9 @@ static ssize_t bnxt_re_cc_config_set(struct file *filp,= const char __user *buffe u32 val; int rc; =20 + if (count >=3D sizeof(buf)) + return -EINVAL; + if (copy_from_user(buf, buffer, count)) return -EFAULT; =20 --=20 2.47.2