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 C67151C57B1; Tue, 15 Oct 2024 12:00:15 +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=1728993615; cv=none; b=R3n/bW+1mWW1/DnBul61iXrgCfqPoqqlh8HPQtcbnUccJngyowS990ietCmREKjos0w44aA/xQBsMItk9EjVSeqmpNpGDpr2wxce6Z8RMZwFiijl95ERWZx5jDnhdX/MUfGtLjVSklJDQJ8eL48bJ6Bk2EDh0ya+v9i2V2zF20Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728993615; c=relaxed/simple; bh=xq7CCQaVMc7ajJOQdDtbPozq7xqIYJcPTZaGwXElXq4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=O3jQ0cK/S0vDzVVmn8kpB2qkwNfA8iARKk9012RWo8gTIYeolDxWDizn2U6afvV2MAoWaPk+w3Go3/yNg3Tpg9DJ7QEkAkk6wHtQEDDPUQ7+o3PlPK/TJExnAupWu7MEzBmN9rny4qjZty4mveFzERKBxF2oY23legav9ZtyyBE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=NK2X61GE; 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="NK2X61GE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 08710C4CEC6; Tue, 15 Oct 2024 12:00:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1728993615; bh=xq7CCQaVMc7ajJOQdDtbPozq7xqIYJcPTZaGwXElXq4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NK2X61GEdb9ll7ZsLmgd+ccJAZhDSobj/6gGYONtlUnWCwvieGl6UDoSyhboaxm2e WFlUP1d+hj3W+CnUOKv2VjVL2dmWREFKPBVbJo76Y+a+iEgG4tsPmQHUxS8e1BxklD sfd0oUv0H7/wohJBHclwxJHWm9Ro7e4aPKUQF3oE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tom Chung , Rodrigo Siqueira , Roman Li , Alex Hung , Aurabindo Pillai , Harry Wentland , Hamza Mahfooz , Srinivasan Shanmugam , Alex Deucher , Sasha Levin Subject: [PATCH 5.15 465/691] drm/amd/display: Fix index out of bounds in DCN30 color transformation Date: Tue, 15 Oct 2024 13:26:53 +0200 Message-ID: <20241015112458.800894177@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241015112440.309539031@linuxfoundation.org> References: <20241015112440.309539031@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: Srinivasan Shanmugam [ Upstream commit d81873f9e715b72d4f8d391c8eb243946f784dfc ] This commit addresses a potential index out of bounds issue in the `cm3_helper_translate_curve_to_hw_format` function in the DCN30 color management module. The issue could occur when the index 'i' exceeds the number of transfer function points (TRANSFER_FUNC_POINTS). The fix adds a check to ensure 'i' is within bounds before accessing the transfer function points. If 'i' is out of bounds, the function returns false to indicate an error. drivers/gpu/drm/amd/amdgpu/../display/dc/dcn30/dcn30_cm_common.c:180 cm3_helper_translate_curve_to_hw_format() error: buffer overflow 'output_tf->tf_pts.red' 1025 <= s32max drivers/gpu/drm/amd/amdgpu/../display/dc/dcn30/dcn30_cm_common.c:181 cm3_helper_translate_curve_to_hw_format() error: buffer overflow 'output_tf->tf_pts.green' 1025 <= s32max drivers/gpu/drm/amd/amdgpu/../display/dc/dcn30/dcn30_cm_common.c:182 cm3_helper_translate_curve_to_hw_format() error: buffer overflow 'output_tf->tf_pts.blue' 1025 <= s32max Cc: Tom Chung Cc: Rodrigo Siqueira Cc: Roman Li Cc: Alex Hung Cc: Aurabindo Pillai Cc: Harry Wentland Cc: Hamza Mahfooz Signed-off-by: Srinivasan Shanmugam Reviewed-by: Tom Chung Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dcn30/dcn30_cm_common.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_cm_common.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_cm_common.c index e0b1fc92ed186..62c02adae7e76 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_cm_common.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_cm_common.c @@ -178,6 +178,8 @@ bool cm3_helper_translate_curve_to_hw_format( i += increment) { if (j == hw_points - 1) break; + if (i >= TRANSFER_FUNC_POINTS) + return false; rgb_resulted[j].red = output_tf->tf_pts.red[i]; rgb_resulted[j].green = output_tf->tf_pts.green[i]; rgb_resulted[j].blue = output_tf->tf_pts.blue[i]; -- 2.43.0