CVE-2026-74306 vfio/qat: fix f_pos race in qat_vf_resume_write()

In the Linux kernel, the following vulnerability has been resolved: vfio/qat: fix fpos race in qatvfresumewrite qatvfresumewrite checks filp-fpos before taking migf-lock, but copies into the migration-state buffer after taking the lock and re-reading the shared file position. Two concurrent write...