CVE-2026-45880
published 2026-05-27CVE-2026-45880: 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()…
medium5.5
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().
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < baa42b756d183a59572f3890981a3d32b8d05d40 | baa42b756d183a59572f3890981a3d32b8d05d40 |
| linux | linux | >= 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < 51b7181cfbedf289ce794b6d97a1c596c309ec38 | 51b7181cfbedf289ce794b6d97a1c596c309ec38 |
| linux | linux | >= 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < e19cce88ec4c4877f4ff2469099b9cf23cc3e93e | e19cce88ec4c4877f4ff2469099b9cf23cc3e93e |
| linux | linux | >= 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < a1f4dc72efc3204db95d052058d785cad7ce755f | a1f4dc72efc3204db95d052058d785cad7ce755f |
| linux | linux | >= 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < 6220694c52a5a04102b48109e4f24e958b559bd3 | 6220694c52a5a04102b48109e4f24e958b559bd3 |
| linux | linux_kernel | — | — |