CVE-2018-11020: Amazon Fire OS

Medium severity, CVSS 4.4. EPSS: 0.6% chance of exploitation in the next 30 days.

kernel/omap/drivers/rpmsg/rpmsg_omx.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 file /dev/rpmsg-omx1 with the command 3221772291, 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.