CVE-2026-22988: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: arp: do not assume dev_hard_header() does not change skb->head arp_create() is the only dev_hard_header() caller making assumption about skb->head being unchanged. A recent commit broke this assumption. Initialize @arp pointer after dev_hard_header() call.

Affected products

• Linux Linux Kernel: from 6.12.64, before 6.12.66 (fixed in 6.12.66); from 6.18.4, before 6.18.6 (fixed in 6.18.6); version 6.1.160 only; version 6.6.120 only; version 6.19 only

Published 2026-01-23. Last modified 2026-06-17.