net: openvswitch: fix middle attribute validation in push_nsh() action

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CVE-2025-68785 · Microsoft / collected KEV context

cve-program · CVE-2025-68785

• https://git.kernel.org/stable/c/d0c135b8bbbcf92836068fd395bebeb7ae6c7bef
• https://git.kernel.org/stable/c/3bc2efff20a38b2c7ca18317649715df0dd62ced
• https://git.kernel.org/stable/c/1b569db9c2f28b599e40050524aae5f7332bc294
• https://git.kernel.org/stable/c/10ffc558246f2c75619aedda0921906095e46702
• https://git.kernel.org/stable/c/2ecfc4433acdb149eafd7fb22d7fd4adf90b25e9
• https://git.kernel.org/stable/c/c999153bfb2d1d9b295b7010d920f2a7c6d7595f
• https://git.kernel.org/stable/c/5ace7ef87f059d68b5f50837ef3e8a1a4870c36e

No related operational record is retained in the current change model.