CVE-2025-39754

medium

In the Linux kernel, the following vulnerability has been resolved: mm/smaps: fix race between smaps_hugetlb_range and migration smaps_hugetlb_range() handle…

Vendor / product: Linux — linux kernel

In 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().

CVSS

4.7

4.7 (CVSS v3.1)

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity source: NVD CVSS v3.1 (nvd@nist.gov)

Timeline (UTC)

Published: 2025-09-11 17:15

Modified: 2026-10-30 13:18

NVD status: Modified

Last synced 1 day ago

Verified against the source API 2026-11-03 07:33 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

linux / linux_kernel ≥4.4 <6.12.43, ≥6.13 <6.15.11, ≥6.16 <6.16.2, 6.17

Weakness classification (CWE)

CWE-362

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Patch / mitigation: https://git.kernel.org/stable/c/09fc018f48871123ad5dbd7b03c956580232ed76

Patch / mitigation: https://git.kernel.org/stable/c/2a1f3663974162b8f1e098196f557cfc1d160138

Patch / mitigation: https://git.kernel.org/stable/c/45d19b4b6c2d422771c29b83462d84afcbb33f01

Patch / mitigation: https://git.kernel.org/stable/c/b625883ccbcc2b57808db51d1375b1d7b9bcb3e5

References

https://git.kernel.org/stable/c/09fc018f48871123ad5dbd7b03c956580232ed76 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/2a1f3663974162b8f1e098196f557cfc1d160138 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/37ee0d97298b0547cb26b6957ccfea2d356bd0e7 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/45d19b4b6c2d422771c29b83462d84afcbb33f01 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b625883ccbcc2b57808db51d1375b1d7b9bcb3e5 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f76089018b34dbe0c2e9b67c5b7d8860668748bb 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Data sources

NVD CVE API 2.0 — fetched 2026-11-03 07:33 UTC · record ↗

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CVE-2025-39754

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Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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