net/sched: serialize qdisc_rtab_list against concurrent get/put

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

CVE-2026-68138 · Microsoft / collected KEV context

cve-program · CVE-2026-68138

• https://git.kernel.org/stable/c/1b050d09dd1a0ddae83bf012cf4956b7a960235f
• https://git.kernel.org/stable/c/6e0241f6cbb149d926ee8efee2c734fea71452cf
• https://git.kernel.org/stable/c/f93c89392bd3b180b5b7abc6fdae8e3dd667a313
• https://git.kernel.org/stable/c/4131dd0b6f67acddd616ed7c244e1d3eedd46e7b
• https://git.kernel.org/stable/c/d981098b76756ed71666a27518eeb69883657c43
• https://git.kernel.org/stable/c/8ddc2eb0d2da9c83f54f1e5720525b461b8480c4
• https://git.kernel.org/stable/c/fb29e1b41052488ee3f2d115d4a870497ebd7f7d
• https://git.kernel.org/stable/c/f43ee0c0730d6191629b5ee1ceae27b1ebfdc047

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