CVE-2026-45880

MEDIUM

PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails

Title source: cna
STIX 2.1

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().

References (5)

Core 5

Scores

CVSS v3 5.5
EPSS 0.0015
EPSS Percentile 5.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (17)
linux/Kernel 6.13.0 - 6.18.14linux
linux/Kernel 6.19.0 - 6.19.4linux
linux/Kernel 6.2.0 - 6.6.128linux
linux/Kernel 6.7.0 - 6.12.75linux
Linux/Linux < 6.2
Linux/Linux 6.12.75 - 6.12.*
Linux/Linux 6.18.14 - 6.18.*
Linux/Linux 6.19.4 - 6.19.*
Linux/Linux 6.2
Linux/Linux 6.6.128 - 6.6.*
... and 7 more
Published May 27, 2026
Tracked Since May 27, 2026