s390/cio: Fix NULL pointer dereference in ccw_device_get_util_str()

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

CVE-2026-98476 · Microsoft / collected KEV context

cve-program · CVE-2026-98476

• https://git.kernel.org/stable/c/9d8b21820caed9128945fffcedf03e2a4c21eee2
• https://git.kernel.org/stable/c/5fc54e04dad90b15d0430118b3f288a1d64e66c9
• https://git.kernel.org/stable/c/27e396a89f76f742abdbe9f8c4a58a6e806fdf59
• https://git.kernel.org/stable/c/dbf30e661ceb9a52c94c85719716391dcc29142a
• https://git.kernel.org/stable/c/5e006ac90a4d331db1dd712b91fec849b45ffc01
• https://git.kernel.org/stable/c/c3bbcb32deecc06ebb1762398399b566d5ff2fc9
• https://git.kernel.org/stable/c/44b16b02608058fc72198ac0205969f0f43065df
• https://git.kernel.org/stable/c/5b76268dac968612f7283d59b539036de955b7d9

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