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([2001:41d0:303:db6b::]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a4cb7bece3sm82641055e9.10.2026.10.25.11.03.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 25 Oct 2026 11:03:25 -0700 (PDT) From: Tristan Madani X-Google-Original-From: Tristan Madani To: jic23@kernel.org Cc: lars@metafoo.de, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH 2/2] iio: imu: inv_mpu6050: validate ACPI object types in asus_acpi_get_sensor_info() Date: Sun, 25 Oct 2026 18:03:23 +0000 Message-ID: <20261025180323.3641477-2-tristan@talencesecurity.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20261025180323.3641477-1-tristan@talencesecurity.com> References: <20261025180323.3641477-1-tristan@talencesecurity.com> X-Mailing-List: linux-kernel@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 asus_acpi_get_sensor_info() iterates through a nested ACPI package structure without checking types at either level. The outer object returned by acpi_evaluate_object() and each inner element must be validated as ACPI_TYPE_PACKAGE before accessing their package.count and package.elements members. Add type checks at both levels of the package iteration. Fixes: a35c5d1aa96a ("iio: imu: inv_mpu6050: Create mux clients for ACPI") Cc: stable@vger.kernel.org Signed-off-by: Tristan Madani --- drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c index 460792ed27e03..81fe1d96365b4 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c @@ -57,11 +57,17 @@ static int asus_acpi_get_sensor_info(struct acpi_device *adev, return -ENODEV; cpm = buffer.pointer; + if (cpm->type != ACPI_TYPE_PACKAGE) { + kfree(buffer.pointer); + return -EINVAL; + } for (i = 0; i < cpm->package.count; ++i) { union acpi_object *elem; int j; elem = &cpm->package.elements[i]; + if (elem->type != ACPI_TYPE_PACKAGE) + continue; for (j = 0; j < elem->package.count; ++j) { union acpi_object *sub_elem; -- 2.47.3