CVE-2025-23147

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.

• linux linux kernel (>= 5.0 < 5.4.293) • linux linux kernel (>= 5.5 < 5.10.237) • linux linux kernel (>= 5.11 < 5.15.181) • linux linux kernel (>= 5.16 < 6.1.135) • linux linux kernel (>= 6.2 < 6.6.88) • linux linux kernel (>= 6.7 < 6.12.24) • linux linux kernel (>= 6.13 < 6.13.12) • linux linux kernel (>= 6.14 < 6.14.3) • debian debian linux 11.0