The Linux kernel change removes a WARN_ON_ONCE macro call from the parse_btf_arg routine. The removed check was not considered an unexpected condition, and its removal means that a user with privileged access can trigger the warning by adding a kprobe event that uses a raw address with a BTF parameter. The security impact of triggering a kernel warning is limited to potential log noise and minor performance overhead; there is no direct disclosure, privilege escalation, or denial‑of‑service mechanism identified in the provided description.

All Linux kernel versions that contain the original WARN_ON_ONCE call in parse_btf_arg are affected. No specific kernel releases are listed, so any kernel build containing the message is potentially subject to the behavior described. The vendor information indicates a general Linux kernel impact rather than a vendor‑specific product.

The EPSS score is unavailable and the vulnerability is not listed in the CISA KEV catalog, implying that there is currently no evidence of active exploitation. The attack vector would require elevated privileges to register a custom kprobe event, so the practical risk is low. The removal of the warning does not change the kernel’s security boundaries, only the frequency of warning messages in the log.