GHSA-FPPF-VQ4V-6J7G
Vulnerability from github – Published: 2025-09-11 18:35 – Updated: 2026-10-30 15:32In the Linux kernel, the following vulnerability has been resolved:
mm/smaps: fix race between smaps_hugetlb_range and migration
smaps_hugetlb_range() handles the pte without holdling ptl, and may be concurrenct with migration, leaing to BUG_ON in pfn_swap_entry_to_page(). The race is as follows.
smaps_hugetlb_range migrate_pages huge_ptep_get remove_migration_ptes folio_unlock pfn_swap_entry_folio BUG_ON
To fix it, hold ptl lock in smaps_hugetlb_range().
{
"affected": [],
"aliases": [
"CVE-2025-39754"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-11T17:15:39Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/smaps: fix race between smaps_hugetlb_range and migration\n\nsmaps_hugetlb_range() handles the pte without holdling ptl, and may be\nconcurrenct with migration, leaing to BUG_ON in pfn_swap_entry_to_page(). \nThe race is as follows.\n\nsmaps_hugetlb_range migrate_pages\n huge_ptep_get\n remove_migration_ptes\n\t\t\t\t folio_unlock\n pfn_swap_entry_folio\n BUG_ON\n\nTo fix it, hold ptl lock in smaps_hugetlb_range().",
"id": "GHSA-fppf-vq4v-6j7g",
"modified": "2026-10-30T15:32:14Z",
"published": "2025-09-11T18:35:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39754"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/09fc018f48871123ad5dbd7b03c956580232ed76"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2a1f3663974162b8f1e098196f557cfc1d160138"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/37ee0d97298b0547cb26b6957ccfea2d356bd0e7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/45d19b4b6c2d422771c29b83462d84afcbb33f01"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b625883ccbcc2b57808db51d1375b1d7b9bcb3e5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f76089018b34dbe0c2e9b67c5b7d8860668748bb"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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