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CVE-2026-22988

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

CVSS 7.8 HIGHEPSS 0.1%
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Produtos afetados
Linux · Linux

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Referências
https://git.kernel.org/stable/c/029935507d0af6553c45380fbf6feecf756fd226https://git.kernel.org/stable/c/393525dee5c39acff8d6705275d7fcaabcfb7f0ahttps://git.kernel.org/stable/c/70bddc16491ef4681f3569b3a2c80309a3edcdd1https://git.kernel.org/stable/c/949647e7771a4a01963fe953a96d81fba7acecf3https://git.kernel.org/stable/c/c92510f5e3f82ba11c95991824a41e59a9c5ed81https://git.kernel.org/stable/c/dd6ccec088adff4bdf33e2b2dd102df20a7128fahttps://git.kernel.org/stable/c/e432dbff342b95fe44645f9a90fcf333c80f4b5e