net/sched: cls_route: fix fastmap use-after-free on filter

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

CVE-2026-74583 · Microsoft / collected KEV context

cve-program · CVE-2026-74583

• https://git.kernel.org/stable/c/7897198b26445b4009a057bda1986b94a99e5d5f
• https://git.kernel.org/stable/c/820f083c294ad6d319c02a7d43294f2ed2565139
• https://git.kernel.org/stable/c/5ec9001be6d0eb527251125632ec8fe88278897f
• https://git.kernel.org/stable/c/b969984b2bdc85d721ce4047cd270cd37ec705a2
• https://git.kernel.org/stable/c/a17f636c9330eac879822ce29f998e5abd1b72c1
• https://git.kernel.org/stable/c/0e7a8cf8895b06d07c7311f028eba16ad742b9bc
• https://git.kernel.org/stable/c/ae9aff87025219005a2d16b4fe83d6f24643e50d
• https://git.kernel.org/stable/c/47d7f7051253bdc02b1d245d87e38f16d31a74df

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