From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794060568; b=xmJtzyrPuoyw20cOTKbdLoOUSYM/+ofOgGact+vcKGnHuxhldDJCQvSpFPB9DxX8Hyhe ulnKe3RW4LH7NTYflnSM+QQ4wK6FdJETajFf1jBljXihSZBOpyteEmFTafWT82dyicXVS Js+c6raXdDpP0lJ6gC0xQnDe9DMmWxq2Al6/+OnBzFTSs44T1qqAk47TZf5FpCoVFRWrh G7jWwI80i4lROlEoeN+G6P4Jf6HMDMKQZn90bPowaztG1RfyPb6PSxGXLR/KAqTkkXSpn sdNQ8f9ccGOcunwFeI0/T2pTVNPSsBg7n15dsOOPJ6KVMFXvbWag3pZ562Jv8QqogTw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794060568; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=nGswOsxKpoDMj9PD7r1/NtNhbjTHjpNLEUoBBgrFYTc=; b=ic7wWojeQeslztpV7DkVUrp1+eJn5i+irrGoUMTJq5sRWT6RVuWfIvtsy+S1CYZOrF1U /itwLCvdJe1VpYAR4irarXLj+kh0n3y7+4+YB8+xsblEx1J+aJo+OcwbWXTMHTkfS+Ln3 xwPe7v2l43eoAZNTNF52s2ECZGxqFiQaGzy0sIOkOuo5RG8HXOmlr9Lmrk5xqSQ1RVKX/ b6be7NFdi823rU2BHow0Mlx9D7hPYRSCkQ+tFSj+/T2bQ1bvtlIGMykDLir7VpVzEIbPu gaUZwA9FV5NjMgW+C14+U9J4+EddzG3ex3wk31o2NVI/DF8ug8drtowL/ZNglJO97xA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=a8chR7c5; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4301D606A326; Sat, 7 Nov 2026 14:09:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=a8chR7c5 Received: by smtp.kernel.org (Postfix) with ESMTPSA id AA52E1F0089F; Sat, 7 Nov 2026 14:09:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794060567; bh=nGswOsxKpoDMj9PD7r1/NtNhbjTHjpNLEUoBBgrFYTc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=a8chR7c5HEGtbtv6YYQQ+jiW5Ya3qpl4+PhyrTUdKA98AhmmS2VjVRAIKw8jYBILl 1urPt5c+mYeSnFZnBsxirRZmW8q8SeLrnSzx4yEjWNA18NRui3KhshRJWvYQnnzKyX +W5U06qLq/7VoZUpW9kaad/noON5Z/cESQlCfzfo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Gangliang Xie , Tao Zhou , Alex Deucher , Sasha Levin Subject: [PATCH 6.12 0029/1536] drm/amdgpu: add buf length check Date: Sat, 7 Nov 2026 08:34:05 -0500 Message-ID: <20261107134958.490662702@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134957.653319350@linuxfoundation.org> References: <20261107134957.653319350@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Gangliang Xie [ Upstream commit 473f99e4a262776141366f7fb10f101d0f22b019 ] add buf length check before using it to access data Signed-off-by: Gangliang Xie Reviewed-by: Tao Zhou Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c index 0d3c18f04ac36..8ae72c862d112 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c @@ -166,7 +166,8 @@ static ssize_t ta_if_load_debugfs_write(struct file *fp, const char *buf, size_t if (ret) return -EFAULT; - if (ta_bin_len > PSP_1_MEG) + if (ta_bin_len < sizeof(struct common_firmware_header) || + ta_bin_len > PSP_1_MEG) return -EINVAL; copy_pos += sizeof(uint32_t); @@ -321,6 +322,8 @@ static ssize_t ta_if_invoke_debugfs_write(struct file *fp, const char *buf, size ret = copy_from_user((void *)&shared_buf_len, &buf[copy_pos], sizeof(uint32_t)); if (ret) return -EFAULT; + if (!shared_buf_len || shared_buf_len > PSP_1_MEG) + return -EINVAL; copy_pos += sizeof(uint32_t); shared_buf = memdup_user(&buf[copy_pos], shared_buf_len); -- 2.53.0