CVE-2023-4459: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

A NULL pointer dereference flaw was found in vmxnet3_rq_cleanup in drivers/net/vmxnet3/vmxnet3_drv.c in the networking sub-component in vmxnet3 in the Linux Kernel. This issue may allow a local attacker with normal user privilege to cause a denial of service due to a missing sanity check during cleanup.

Affected products

• Linux Linux Kernel: before 5.18 (fixed in 5.18)
• Red Hat Enterprise Linux: version 8.0 only; version 9.0 only

Published 2023-08-21. Last modified 2026-10-08.