In the Linux kernel, the following vulnerability has been resolved:
i3c: Add NULL pointer check in i3c_master_queue_ibi()
The I3C master driver may receive an IBI from a target device that has not
been probed yet. In such cases, the master calls `i3c_master_queue_ibi()`
to queue an IBI work task, leading to "Unable to handle kernel read from
unreadable memory" and resulting in a kernel panic.
Typical IBI handling flow:
1. The I3C master scans target devices and probes their respective drivers.
2. The target device driver calls `i3c_device_request_ibi()` to enable IBI
and assigns `dev->ibi = ibi`.
3. The I3C master receives an IBI from the target device and calls
`i3c_master_queue_ibi()` to queue the target device driver’s IBI
handler task.
However, since target device events are asynchronous to the I3C probe
sequence, step 3 may occur before step 2, causing `dev->ibi` to be `NULL`,
leading to a kernel panic.
Add a NULL pointer check in `i3c_master_queue_ibi()` to prevent accessing
an uninitialized `dev->ibi`, ensuring stability.
CVSS
No CVSS.
References
Configurations
No configuration.
History
03 Nov 2025, 20:17
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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02 May 2025, 13:53
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-05-01 13:15
Updated : 2025-11-03 20:17
NVD link : CVE-2025-23147
Mitre link : CVE-2025-23147
CVE.ORG link : CVE-2025-23147
JSON object : View
Products Affected
No product.
CWE
No CWE.