CVE-2023-52749
- Source
- https://cve.org/CVERecord?id=CVE-2023-52749
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52749.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-52749
- Downstream
- Related
- Published
- 2024-05-21T15:30:38Z
- Modified
- 2026-08-12T03:51:19Z
- Summary
- spi: Fix null dereference on suspend
- Details
-
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:
- spi_sync() calls __spi_transfer_message_noqueue() which sets ctlr->cur_msg
- Spi transfer begins via spi_transfer_one_message()
- System is suspended interrupting the transfer context
- System is resumed
- spi_controller_resume() calls spi_start_queue() which resets cur_msg to NULL
- 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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52749.json" }- References
-
- https://git.kernel.org/stable/c/4ec4508db97502a12daee88c74782e8d35ced068
- https://git.kernel.org/stable/c/96474ea47dc67b0704392d59192b233c8197db0e
- https://git.kernel.org/stable/c/bef4a48f4ef798c4feddf045d49e53c8a97d5e37
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52749.json
- https://nvd.nist.gov/vuln/detail/CVE-2023-52749
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git