CVE-2026-74721

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> accel/amxdna: Fix page-insertion errors in amdxdna_insert_pages()<br /> <br /> Two error paths in amdxdna_insert_pages() called vma-&gt;vm_ops-&gt;close(vma)<br /> before returning an error code to the caller. This is incorrect:<br /> amdxdna_gem_obj_mmap() registers an HMM interval notifier before calling<br /> amdxdna_insert_pages(), and on a hard error it jumps to hmm_unreg to undo<br /> that registration. Calling vm_ops-&gt;close() manually — which drops the<br /> shmem pages_pin_count and the GEM object reference that backs the VMA —<br /> before the mmap syscall has even returned causes those resources to be<br /> released while the VMA is still alive. The kernel VMA teardown will call<br /> vm_ops-&gt;close() a second time when the process later unmaps the range,<br /> producing a reference count underflow.<br /> <br /> Replace both hard-error returns with a deferred-fault approach that keeps<br /> the VMA alive and retries page insertion through the HMM range-fault path.