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().

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 affected < baa42b756d183a59572f3890981a3d32b8d05d40
7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 affected < 51b7181cfbedf289ce794b6d97a1c596c309ec38
7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 affected < e19cce88ec4c4877f4ff2469099b9cf23cc3e93e
7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 affected < a1f4dc72efc3204db95d052058d785cad7ce755f
7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 affected < 6220694c52a5a04102b48109e4f24e958b559bd3
Linux Linux affected
Version Status Constraints
6.2 affected —
0 unaffected < 6.2
6.6.128 unaffected ≤ 6.6.*
6.12.75 unaffected ≤ 6.12.*
6.18.14 unaffected ≤ 6.18.*
6.19.4 unaffected ≤ 6.19.*
7.0 unaffected ≤ *

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/51b7181cfbedf289ce794b6d97a1c596c309ec38 cve-icon cve-icon
https://git.kernel.org/stable/c/6220694c52a5a04102b48109e4f24e958b559bd3 cve-icon cve-icon
https://git.kernel.org/stable/c/a1f4dc72efc3204db95d052058d785cad7ce755f cve-icon cve-icon
https://git.kernel.org/stable/c/baa42b756d183a59572f3890981a3d32b8d05d40 cve-icon cve-icon
https://git.kernel.org/stable/c/e19cce88ec4c4877f4ff2469099b9cf23cc3e93e cve-icon cve-icon
History

Wed, 27 May 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-674
CWE-795

Wed, 27 May 2026 14:15:00 +0000

Type Values Removed Values Added
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().
Title PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-05-27T12:16:52.117Z

Reserved: 2026-05-13T15:03:33.082Z

Link: CVE-2026-45880

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-27T14:17:01.813

Modified: 2026-05-27T14:48:31.480

Link: CVE-2026-45880

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T16:15:05Z

Weaknesses