From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f175.google.com (mail-yw1-f175.google.com [209.85.128.175]) (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 1365D37206E for ; Tue, 12 May 2026 13:07:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.175 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778591251; cv=none; b=iS8mm723j9/3JjHgTX/FlNDWphPBF7fh9oj/kGo8TpkrVm13tBFcIKUW1zMfHhu2+a9jeE/d029eg5ilgMDDBT/HdPh6AtqkAJrVmv1GZqFlfzY7KR/++gcXpm8klvVnKboOz75OzD7+k5Gg8navYNB9mGACuBM15nn4o/KgvwE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778591251; c=relaxed/simple; bh=O58YtyLftv/aSr8x9baMQzWxATwo2ioj8rHnKr5cmYk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=hVvWLYU8VSMs2pzArTiB6InoiKxLOiaEmuecR11+Njeuq5HnvBCcS612CjopvfPD5G/nt96MC7ws6wfXYokvT/Q8DKb4DJ6y/9uzSUu6ME0P7JWAooXinPuQftygZqQ5JA+7BiRNB13XxO6hfAq+nxAY+R+8JJIJ8xzPYCECBTU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=NwuFgspb; arc=none smtp.client-ip=209.85.128.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="NwuFgspb" Received: by mail-yw1-f175.google.com with SMTP id 00721157ae682-7bd9f61458eso41279587b3.0 for ; Tue, 12 May 2026 06:07:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1778591248; x=1779196048; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=q6OJAQsGwoFPD7r4LZcpMPocelNw4jhWQiyjjqAx5Pk=; b=NwuFgspbYjjUKTWzbFiLyatbSUVTs/IOpFn5NBzG/cUwQBk/0H1pWciYNYM/AbzK2l UhcMXqkPYWj0Mtk2M6//aD8DqVQNh0cpPt4yzBio8IW96GVk8Wr08QsywXmCFDLF/zGN hLx6bPIfhQ7QveXF2Rf0IUqzysyHSLwq9jS8DHZSZ5S5i2+U1L5vcyfeZAroRUO9RGBn QqLsLP+5sHt8toYMXej3tJdDRXJmTuuzfgBljLfI3wcQr0ustLzftHI3pQRD8jd5z6o0 kgteVPzYFPWWjX3LlPdPPbMSrc28L+la6K8/X2W8yTFDpYe3lPrLE2uFPbHgJFC48JYz DClA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778591248; x=1779196048; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=q6OJAQsGwoFPD7r4LZcpMPocelNw4jhWQiyjjqAx5Pk=; b=JY5r8Jo/cNsjlzK2poSxZRw7VDNqMD0UPY8SEbyMMc1NGPRJCij0UC/BSWNnMEPrgU u4jJNMUxGFr+n17R3d0hefHrxNH82AdMuusHTnreNbs/iHBgk+MNj4K8VxUtNv/nRe3S saOAD74q/jf1urFOEy7rSb9iU2EWSzgyGrhtPOWa+jbjC8zzqymqAFHKoIypGZLHL+Qc YJi3I0DqlxJnUnpIkyAAZKhTlvIvnGY4YjS0w5OAYqb4GREKj1nqP5On001H9EEnTIgV BATTzAjjUnC+H4ADMOFB/XNj79Kl6aPZlt4eD8B1xBxeJ/G1lc7IIM7eIqEEzynkHFsw cjtg== X-Gm-Message-State: AOJu0YxQpwPbAu2pgdTfdZZBulFI/wvdy5uzuWr6U7m2bfdr5lbe1kyM AbnaB2peoK1vj+PihPeSm9dIRCrIVTZb1TBm6LHiuX3uhT7rHEiciRe4 X-Gm-Gg: Acq92OFkbc5y3HE48pH3wFCx03GQ2eveHR8GHrOcVFBr9XFNuSXFugXbbgXPrdMJ48Z Pr8x57uutjAOH/l1Sn8SuoKH644GrUR0WVYQAcNiQqJJz4WWoFJm0dBJiYWkpnU6W/il8xZB9JV G69XAepJ4b10biu7vdyovle2243+WNMY+jxjtHtfZ8EUZBdeN+RHUL9orYgFFEJoHeBC0iYWXFY 7OMIMAhspeydqbIAz0m7DmkIkYk/8/3cisa7qfXYpl5ZjyrkBMi8hj6cfQIjynrGIrc6PBr99iH TzX9WX9dDUY5agrs3GKs4uG8Ha3SLUP8a1mc+X6niDVjJlu0WxogLxCgn2SMoHyVSlkg4pJ1bht jaGNXu3IK+KYzPTrC1yqtwcmEInKIjo7xLyaMZcSOxK8axfpqGFakti+rzutZRocrmeXBWdZnja I3s8dSi2IA4tI3vxzoIqstfwlNOEtYyBX1WthecnfVE6zzOHXs960KOIOq X-Received: by 2002:a05:690c:885:b0:79a:3e8d:9bd8 with SMTP id 00721157ae682-7c1025640dbmr134369777b3.2.1778591247954; Tue, 12 May 2026 06:07:27 -0700 (PDT) Received: from localhost.localdomain ([186.151.100.108]) by smtp.gmail.com with ESMTPSA id 00721157ae682-7bd6686ead7sm167459037b3.39.2026.05.12.06.07.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 May 2026 06:07:27 -0700 (PDT) From: Sebastian Alba Vives To: yilun.xu@linux.intel.com, gregkh@linuxfoundation.org Cc: linux-fpga@vger.kernel.org, conor.dooley@microchip.com, mdf@kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Sebastian Alba Vives Subject: [PATCH v6 0/3] fpga: bounds checks and input validation fixes Date: Tue, 12 May 2026 07:07:07 -0600 Message-ID: <20260512130710.933089-1-sebasjosue84@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-fpga@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series adds three defensive fixes to FPGA drivers: Patch 1/3 fixes dfh_get_param_size() in the DFL driver where the loop bounds check is evaluated before incrementing size, potentially returning an inflated size that exceeds the feature region boundary. Patch 2/3 validates the DMA mapping length in afu_ioctl_dma_map() at the ioctl entry point before passing it down the call chain, preventing implicit integer truncation in pin_user_pages_fast(). Patch 3/3 fixes mpf_ops_parse_header() in the Microchip SPI FPGA manager where a zero header_size from the bitstream causes a one-byte read before the buffer start. Sebastian Alba Vives (3): fpga: dfl: add bounds check in dfh_get_param_size() fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region() fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header() drivers/fpga/dfl-afu-main.c | 3 +++ drivers/fpga/dfl.c | 2 ++ drivers/fpga/microchip-spi.c | 3 +++ 3 files changed, 8 insertions(+) -- 2.43.0