smb: client: restrict implied bcc[0] exemption to responses without data area

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-64448 · Microsoft / collected KEV context

cve-program · CVE-2026-64448

• https://git.kernel.org/stable/c/8d0bbc78046d264bbf6a574ea6f9072258a43e35
• https://git.kernel.org/stable/c/b6a381c01e2ac98a48e32ac0f2a45bbadd9e26b0
• https://git.kernel.org/stable/c/31c6312608c60b72a1feb99a5afb680645a3e8a3
• https://git.kernel.org/stable/c/573e502d14714d2947e22e7eff40ec20a6a44a42
• https://git.kernel.org/stable/c/419ec1b604d7fb60c10aec2dc062371f9fcd4940
• https://git.kernel.org/stable/c/ceb875a375dedbf51c9425c1d13a2d7a8435c08c
• https://git.kernel.org/stable/c/6e9d10f62773b99bd927940fd9cbdfe7207e23ff
• https://git.kernel.org/stable/c/53b7c271f06be4dd5cfc8c6ef552a8355c891a7f

No related operational record is retained in the current change model.