An issue was discovered in the Linux kernel through 4.19. An information leak in cdromioctlselect_disc in drivers/cdrom/cdrom.c could be used by local attackers to read kernel memory because a cast from unsigned long to int interferes with bounds checking. This is similar to CVE-2018-10940 and CVE-2018-16658.
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"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-18710.json"