High · published May 27, 2026
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix a potential use-after-free of BTF object
Refcounting in the check_pseudo_btf_id() function is incorrect:
the __check_pseudo_btf_id() function might get called with a zero
refcounted btf. Fix this, and patch related code accordingly.
v3: rephrase a comment (AI)
v2: fix a refcount leak introduced in v1 (AI)