Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: mark a NULL call argument precise check_func_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. check_helper_call() enforces second parameter of the bpf_get_local_storage() to be zero, w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Grouping these two into one patch, as they share the same fixes tag.
References
- https://git.kernel.org/stable/c/1a3a10b030c96ea88868ccc060a16827c01eaa5a
- https://git.kernel.org/stable/c/69a9ad004ccf5d45e534c7d503f47f643abe64b7
- https://git.kernel.org/stable/c/b1fe6379e401b8ce0f561cb4d84af2b70b4343c3
FAQ
What is CVE-2026-98019?
CVE-2026-98019 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: bpf: mark a NULL call argument precise check_func_arg() allows bpf_register_is_null() for nullable arguments w/o marking the under...
How severe is CVE-2026-98019?
CVSS scoring is not yet available for CVE-2026-98019. Check NVD for updates.
Is there a patch for CVE-2026-98019?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.