bpf: Fix a UAF issue in bpf_trampoline_link_cgroup_shim

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CVE-2026-23319 · Microsoft / collected KEV context

cve-program · CVE-2026-23319

• https://git.kernel.org/stable/c/529e685e522b9d7fb379dbe6929dcdf520e34c8c
• https://git.kernel.org/stable/c/9b02c5c4147f8af8ed783c8deb5df927a55c3951
• https://git.kernel.org/stable/c/cfcfa0ca0212162aa472551266038e8fd6768cff
• https://git.kernel.org/stable/c/3eeddb80191f7626ec1ef742bfff51ec3b0fa5c2
• https://git.kernel.org/stable/c/4e8a0005d633a4adc98e3b65d5080f93b90d356b
• https://git.kernel.org/stable/c/56145d237385ca0e7ca9ff7b226aaf2eb8ef368b

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