CVE-2023-42754: Fedoraproject Fedora

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

A NULL pointer dereference flaw was found in the Linux kernel ipv4 stack. The socket buffer (skb) was assumed to be associated with a device before calling __ip_options_compile, which is not always the case if the skb is re-routed by ipvs. This issue may allow a local user with CAP_NET_ADMIN privileges to crash the system.

Affected products

• Fedoraproject Fedora: version 37 only; version 38 only; version 39 only
• Linux Linux Kernel: before 6.6 (fixed in 6.6); version 6.6 only
• Red Hat Enterprise Linux: version 8.0 only; version 9.0 only

Published 2023-10-05. Last modified 2026-06-17.