CVE-2026-22988

arp: do not assume dev_hard_header() does not change skb->head

High · published January 23, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
3.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00143 · 3.3th percentile
Published
2026-01-23T15:24Z
EPSS history
Timeline
  • 23 JAN 15:24Z
    arp: do not assume dev_hard_header() does not change skb->head
    cvelistv5