CVE - CVE-2023-52749

CVE-ID
CVE-2023-52749	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/4ec4508db97502a12daee88c74782e8d35ced068 URL:https://git.kernel.org/stable/c/4ec4508db97502a12daee88c74782e8d35ced068 MISC:https://git.kernel.org/stable/c/96474ea47dc67b0704392d59192b233c8197db0e URL:https://git.kernel.org/stable/c/96474ea47dc67b0704392d59192b233c8197db0e MISC:https://git.kernel.org/stable/c/bef4a48f4ef798c4feddf045d49e53c8a97d5e37 URL:https://git.kernel.org/stable/c/bef4a48f4ef798c4feddf045d49e53c8a97d5e37
Assigning CNA
kernel.org
Date Record Created
20240521	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240521)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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