CVE-2023-52763 Information

Description

In the Linux kernel the following vulnerability has been resolved:

i3c: master: mipi-i3c-hci: Fix a kernel panic for accessing DAT_data.

The i3c_master_bus_init function may attach the I2C devices before the I3C bus initialization. In this flow the DAT alloc_entry`` will be used before the DAT init. Additionally if the i3c_master_bus_initfails the DATcleanupwill execute before the device is detached which will execue DATfree_entry` function. The above scenario can cause the driver to use DAT_data when it is NULL.

Reference

https://git.kernel.org/stable/c/39c71357e68e2f03766f9321b9f4882e49ff1442 https://git.kernel.org/stable/c/e64d23dc65810be4e3395d72df0c398f60c991f9 https://git.kernel.org/stable/c/3cb79a365e7cce8f121bba91312e2ddd206b9781 https://git.kernel.org/stable/c/eed74230435c61eeb58abaa275b1820e6a4b7f02 https://git.kernel.org/stable/c/b53e9758a31c683fc8615df930262192ed5f034b