arp: do not assume dev_hard_header() does not change skb->head
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.
02 / AFFECTED SOFTWARE
Affected packages
6 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/029935507d0af6553c45380fbf6feecf756fd226
- https://git.kernel.org/stable/c/393525dee5c39acff8d6705275d7fcaabcfb7f0a
- https://git.kernel.org/stable/c/70bddc16491ef4681f3569b3a2c80309a3edcdd1
- https://git.kernel.org/stable/c/949647e7771a4a01963fe953a96d81fba7acecf3
- https://git.kernel.org/stable/c/c92510f5e3f82ba11c95991824a41e59a9c5ed81
- https://git.kernel.org/stable/c/dd6ccec088adff4bdf33e2b2dd102df20a7128fa
- https://git.kernel.org/stable/c/e432dbff342b95fe44645f9a90fcf333c80f4b5e
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22988.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-22988