Description
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 products
linux: linux kernel
References5
- git.kernel.org/stable/c/51b7181cfbedf289ce794b6d97a1c596c309ec38 Patch
- git.kernel.org/stable/c/6220694c52a5a04102b48109e4f24e958b559bd3 Patch
- git.kernel.org/stable/c/a1f4dc72efc3204db95d052058d785cad7ce755f Patch
- git.kernel.org/stable/c/baa42b756d183a59572f3890981a3d32b8d05d40 Patch
- git.kernel.org/stable/c/e19cce88ec4c4877f4ff2469099b9cf23cc3e93e Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 14 November 2026
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