In the Linux kernel, the following vulnerability has been resolved:
PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails
When vm_insert_page() fails in p2pmem_alloc_mmap(), p2pmem_alloc_mmap()
doesn't invoke percpu_ref_put() to free the per-CPU ref of pgmap acquired
after gen_pool_alloc_owner(), and memunmap_pages() will hang forever when
trying to remove the PCI device.
Fix it by adding the missed percpu_ref_put().
| Score | Percentile |
|---|---|
| 0.02% | 5.15% |
No CVSS scores in this advisory.
| Type | Value |
|---|---|
| GHSA | GHSA-mvr8-9v2m-pg6f ↗ |
| CVE | CVE-2026-45880 ↗ |