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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws-6.5 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure-5.15 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure-6.5 | < any | UNKNOWN |
git.kernel.org/linus/bef4a48f4ef798c4feddf045d49e53c8a97d5e37 (6.7-rc1)
git.kernel.org/stable/c/4ec4508db97502a12daee88c74782e8d35ced068
git.kernel.org/stable/c/96474ea47dc67b0704392d59192b233c8197db0e
git.kernel.org/stable/c/bef4a48f4ef798c4feddf045d49e53c8a97d5e37
launchpad.net/bugs/cve/CVE-2023-52749
nvd.nist.gov/vuln/detail/CVE-2023-52749
security-tracker.debian.org/tracker/CVE-2023-52749
www.cve.org/CVERecord?id=CVE-2023-52749