CVE-2026-72093 accel/amdxdna: Fix use-after-free in amdxdna_gem_dmabuf_mmap()

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix use-after-free in amdxdnagemdmabufmmap When vminsertpages fails, the error path calls vma-vmops-closevma which internally calls drmgemvmclose → drmgemobjectput, releasing the GEM object reference acquired at th...