CVE-2026-53099 bpf: Switch CONFIG_CFI_CLANG to CONFIG_CFI

In the Linux kernel, the following vulnerability has been resolved: bpf: Switch CONFIGCFICLANG to CONFIGCFI This was renamed in commit 23ef9d439769 "kcfi: Rename CONFIGCFICLANG to CONFIGCFI" as it is now a compiler-agnostic option. Using the wrong name results in the code getting compiled out...

CVE-2026-53099

CVE-2026-53099 concerns the Linux kernel BPF/CFI config handling. The issue stems from a rename: CONFIG_CFI_CLANG was renamed to CONFIG_CFI, but some builds may still use the old name, causing CFI to be compiled out. As a result, CFI failures for btF_dtor_kfunc_t could be missed, potentially allo...