CVE-2026-45880 (GCVE-0-2026-45880)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:16 – Updated: 2026-05-27 12:16
VLAI
Title
PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails
Summary
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().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 , < baa42b756d183a59572f3890981a3d32b8d05d40 (git)
Affected: 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 , < 51b7181cfbedf289ce794b6d97a1c596c309ec38 (git)
Affected: 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 , < e19cce88ec4c4877f4ff2469099b9cf23cc3e93e (git)
Affected: 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 , < a1f4dc72efc3204db95d052058d785cad7ce755f (git)
Affected: 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 , < 6220694c52a5a04102b48109e4f24e958b559bd3 (git)
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Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.14 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/p2pdma.c"
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      "cpeApplicability": [
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        "shortName": "Linux"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45880",
    "datePublished": "2026-05-27T12:16:52.117Z",
    "dateReserved": "2026-05-13T15:03:33.082Z",
    "dateUpdated": "2026-05-27T12:16:52.117Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}


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