CVE-2026-98613 bpf: Bound ownership depth through local kptrs and graph roots

In the Linux kernel, the following vulnerability has been resolved: bpf: Bound ownership depth through local kptrs and graph roots Program-allocated objects can own other local objects through referenced kptrs. bpfobjfreefields follows those pointers through bpfobjdropimpl synchronously, before t...

CVE-2026-98613

In the Linux kernel, the following vulnerability has been resolved: b...

CVE-2026-98613

The Linux kernel contains a vulnerability where program-allocated objects can own other local objects via referenced kptrs . The bpf_obj_free_fields() function follows these pointers synchronously through __bpf_obj_drop_impl() before RCU-based freeing. This allows self-referential local kptr type...