vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-63993 · Microsoft / collected KEV context

cve-program · CVE-2026-63993

• https://git.kernel.org/stable/c/6b8bfce9d2f774d2c2243e0248e03efb99bba6c0
• https://git.kernel.org/stable/c/9257f56ac47ef1976bcd056cf986a9988eeec67a
• https://git.kernel.org/stable/c/8d435d68d71fb875876b722f4136caf74f2f48bd
• https://git.kernel.org/stable/c/dc3bfa050f873371e745bdf478b1f5b738e5733d
• https://git.kernel.org/stable/c/609e63312c29aad18026a1d3222e123d4b6b0feb
• https://git.kernel.org/stable/c/5303925e360527243b46a440a04667826bbc72b7
• https://git.kernel.org/stable/c/a493efd4336cf19122ae0e4cbb3d31b32d70deea
• https://git.kernel.org/stable/c/7d9ef0cb271555d8cf39fefe6c981e1493b25ecf

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