What happened
In the Linux kernel, the following vulnerability has been resolved: i3c: renesas: Check that the transfer is valid before accessing it The Renesas I3C driver uses an asynchronous model to transfer data. It prepares a struct renesas_i3c_xfer, enqueues it, and waits for completion. The interrupt handler dequeues the transfer, updates/uses it, and signals the waiting thread. If the completion times out, the waiting thread dequeues the transfer and free it. If an interrupt fires after that, the handler may access freed memory, leading to crashes. Check that the transfer is still valid before accessing it in the interrupt handler. With it clear any status flags and disable all the interrupts to avoid triggering the same interrupts again.
Affected versions
Linux: d028219a9f1485914492bf373406f6a0e665ace2 through before 0093f9fc102ba8b98561fdd2f8559553ef56be59 (git); d028219a9f1485914492bf373406f6a0e665ace2 through before ec631aff93261c6d031f953549802322032f2aba (git); d028219a9f1485914492bf373406f6a0e665ace2 through before 5f1a76ecfe90544a28d657306c9b3caa66ba0e63 (git); 6.17 Fixed: See vendor advisory.
Why it matters
Review the vendor advisory and exposure of the affected product to determine operational impact.
Detection & mitigation
- Apply vendor-provided updates or mitigations.
- Review affected product exposure and access logs.
Public PoC references
No public PoC reference has passed the current publication threshold.