CVE-2018-5333: Canonical Ubuntu Linux

Medium severity, CVSS 5.5. EPSS: 7.2% chance of exploitation in the next 30 days.

In the Linux kernel through 4.14.13, the rds_cmsg_atomic function in net/rds/rdma.c mishandles cases where page pinning fails or an invalid address is supplied, leading to an rds_atomic_free_op NULL pointer dereference.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 17.10 only
• Debian Debian Linux: version 7.0 only; version 8.0 only
• Linux Linux Kernel: up to and including 4.14.13

Published 2018-01-11. Last modified 2026-06-17.