CVE-2023-52749

In the Linux kernel, the following vulnerability has been resolved: spi: Fix null dereference on suspend A race condition exists where a synchronous (noqueue) transfer can be active during a system suspend. This can cause a null pointer dereference exception to occur when the system resumes. Example order of events leading to the exception: 1. spi_sync() calls __spi_transfer_message_noqueue() which sets ctlr->cur_msg 2. Spi transfer begins via spi_transfer_one_message() 3. System is suspended interrupting the transfer context 4. System is resumed 6. spi_controller_resume() calls spi_start_queue() which resets cur_msg to NULL 7. Spi transfer context resumes and spi_finalize_current_message() is called which dereferences cur_msg (which is now NULL) Wait for synchronous transfers to complete before suspending by acquiring the bus mutex and setting/checking a suspend flag.

The following products are affected by CVE-2023-52749 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2023-52749.

URL	Resource
https://git.kernel.org/stable/c/4ec4508db97502a12daee88c74782e8d35ced068
https://git.kernel.org/stable/c/96474ea47dc67b0704392d59192b233c8197db0e
https://git.kernel.org/stable/c/bef4a48f4ef798c4feddf045d49e53c8a97d5e37
https://lore.kernel.org/linux-cve-announce/2024052144-CVE-2023-52749-684e@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2023-52749
https://www.cve.org/CVERecord?id=CVE-2023-52749