An issue was discovered in the Linux kernel before 5.0.4. There is a use-after-free upon attempted read access to /proc/ioports after the ipmisi module is removed, related to drivers/char/ipmi/ipmisiintf.c, drivers/char/ipmi/ipmisimemio.c, and drivers/char/ipmi/ipmisiport_io.c.
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"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-11811.json"