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Tracker / CVE-2025-23147

CVE-2025-23147

Media 5.5

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.

Prodotti e versioni affette

debian debian_linux
linux linux_kernel · 5.0 → 5.4.293
linux linux_kernel · 5.11 → 5.15.181
linux linux_kernel · 5.16 → 6.1.135
linux linux_kernel · 5.5 → 5.10.237
linux linux_kernel · 6.13 → 6.13.12
linux linux_kernel · 6.14 → 6.14.3
linux linux_kernel · 6.2 → 6.6.88
linux linux_kernel · 6.7 → 6.12.24

Analisi

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Riferimenti