CVE-2018-11022: Amazon Fire OS

High severity, CVSS 7.5. EPSS: 2.6% chance of exploitation in the next 30 days.

kernel/omap/drivers/misc/gcx/gcioctl/gcif.c in the kernel component in Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 allows attackers to inject a crafted argument via the argument of an ioctl on device /dev/gcioctl with the command 3224132973 and cause a kernel crash.

Affected products

• Amazon Fire OS: version 4.5.5.3 only

Published 2018-10-16. Last modified 2026-06-17.