In the Linux kernel, the following vulnerability has been resolved:
iio: accel: mma8452: use the correct logic to get mma8452_data
The original logic to get mma8452_data is wrong, the *dev point to the device belong to iio_dev. we can't use this dev to find the correct i2c_client. The original logic happen to work because it finally use dev->driver_data to get iio_dev. Here use the API to_i2c_client() is wrong and make reader confuse. To correct the logic, it should be like this
struct mma8452_data *data = iio_priv(dev_get_drvdata(dev));
But after commit 8b7651f25962 ("iio: iio_device_alloc(): Remove unnecessary self drvdata"), the upper logic also can't work. When try to show the avialable scale in userspace, will meet kernel dump, kernel handle NULL pointer dereference.
So use dev_to_iio_dev() to correct the logic.
Dual fixes tags as the second reflects when the bug was exposed, whilst the first reflects when the original bug was introduced.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Ubuntu | — | Upgrade linux-gkeUpgrade linux-riscv-5.15Upgrade linux-oracle-5.15Upgrade linux-aws-5.15Upgrade linux-intel-iotgUpgrade linuxUpgrade linux-gcpUpgrade linux-oracleUpgrade linux-gcp-5.15Upgrade linux-azureUpgrade linux-nvidiaUpgrade linux-realtimeUpgrade linux-ibmUpgrade linux-lowlatencyUpgrade linux-intel-iotg-5.15Upgrade linux-raspiUpgrade linux-hwe-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-kvmUpgrade linux-azure-5.15Upgrade linux-awsUpgrade linux-gkeop | Mar 19, 2025 | Feb 26, 2025 |
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