CVE-2025-38085

MEDIUMNVD 4.74.7—
EchelonGraph scoreMEDIUM confidence

Score 4.7 from GitHub Security Advisory published 2025-06-28. NVD baseline CVSS 4.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.7Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race

huge_pmd_unshare() drops a reference on a page table that may have previously been shared across processes, potentially turning it into a normal page table used in another process in which unrelated VMAs can afterwards be installed.

If this happens in the middle of a concurrent gup_fast(), gup_fast() could end up walking the page tables of another process. While I don't see any way in which that immediately leads to kernel memory corruption, it is really weird and unexpected.

Fix it with an explicit broadcast IPI through tlb_remove_table_sync_one(), just like we do in khugepaged when removing page tables for a THP collapse.

CVSS v3
4.7
EG Score
4.7(medium)
EG Risk
21(Track)
EG Risk 21/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity47% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

June 28, 2025

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

Project Zero

https://project-zero.issues.chromium.org/issues/420715744
generic

mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1013af4f585fccc4d3e5c5824d174de2257f7d6d
generic

mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a6bfeb97941a9187833b526bc6cc4ff5706d0ce9
generic

mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/034a52b5ef57c9c8225d94e9067f3390bb33922f
generic

mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fe684290418ef9ef76630072086ee530b92f02b8
generic

mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b7754d3aa7bf9f62218d096c0c8f6c13698fac8b
generic

mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a3d864c901a300c295692d129159fc3001a56185
generic

mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/952596b08c74e8fe9e2883d1dc8a8f54a37384ec

Vendor Advisories for CVE-2025-38085(12)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-realtime-hwe-24.04-edge (6.14.0-1014.14~24.04.1) @ noble2026-07-30ubuntu
ubuntulinux-tools-aws-edge (6.14.0-1015.15~24.04.1) @ noble2026-07-30ubuntu
ubuntulinux-tools-gcp-edge (6.14.0-1018.19~24.04.1) @ noble2026-07-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-34.34~24.04.1) @ noble2026-07-30ubuntu
ubuntulinux-virtual-6.8 (6.8.0-100.100) @ noble2026-07-30ubuntu
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1041.42~22.04.1) @ jammy2026-07-30ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1041.42) @ noble2026-07-30ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1047.50~22.04.2) @ jammy2026-07-30ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-100.100+fips1) @ noble2026-07-30ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1047.50+fips1) @ noble2026-07-30ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-100.100~22.04.1) @ jammy2026-07-30ubuntu
ubuntulinux-tools-gke-64k-6.8 (6.8.0-1043.48) @ noble2026-07-30ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-100.100.1) @ noble2026-07-30ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1046.49.1) @ noble2026-07-30ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1023.24) @ noble2026-07-30ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1046.52) @ noble2026-07-30ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1046.52+fips1) @ noble2026-07-30ubuntu
redhatkernel-0:4.18.0-193.173.1.el8_22025-11-18redhat
redhatkernel-0:4.18.0-305.172.1.el8_42025-09-11redhat
redhatkernel-0:5.14.0-427.88.1.el9_42025-09-11redhat
redhatkernel-0:5.14.0-70.146.1.el9_02025-09-11redhat
redhatkernel-0:4.18.0-372.160.1.el8_62025-09-10redhat
redhatkernel-rt-0:5.14.0-70.146.1.rt21.218.el9_02025-09-10redhat
redhatkernel-rt-0:5.14.0-284.136.1.rt14.421.el9_22025-09-04redhat
redhatkernel-0:5.14.0-284.136.1.el9_22025-09-04redhat
redhatkernel-0:4.18.0-477.108.1.el8_82025-09-02redhat
redhatkernel-0:5.14.0-570.35.1.el9_62025-08-18redhat
redhatkernel-0:6.12.0-55.27.1.el10_02025-08-11redhat
redhatkernel-rt-0:4.18.0-553.69.1.rt7.410.el8_102025-08-11redhat
redhatkernel-0:4.18.0-553.69.1.el8_102025-08-11redhat
linuxKernel @ 5.10.239—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (46 versions)5.10.244-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.148-1~deb11u1 (11 versions)6.1.153-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (41 versions)6.1.147-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.12.35-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.12.35-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(13)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 5× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 125 total refreshes for this CVE.

  1. 2026-09-07 16:00 UTCEPSS rescore
  2. 2026-09-07 12:47 UTCOSV refresh
  3. 2026-09-06 13:46 UTCEPSS rescore
  4. 2026-09-04 05:05 UTCEPSS rescore
  5. 2026-09-02 14:11 UTCEPSS rescore
  6. 2026-09-01 13:53 UTCEPSS rescore
  7. 2026-09-01 04:38 UTCEPSS rescore
  8. 2026-08-30 19:16 UTCEPSS rescore
  9. 2026-08-30 01:21 UTCEPSS rescore
  10. 2026-08-28 21:40 UTCEPSS rescore
  11. 2026-08-27 14:24 UTCEPSS rescore
  12. 2026-08-26 14:45 UTCEPSS rescore
  13. 2026-08-25 13:48 UTCEPSS rescore
  14. 2026-08-21 23:48 UTCEPSS rescore
  15. 2026-08-20 22:54 UTCEPSS rescore
  16. 2026-08-20 22:01 UTCOSV refresh
  17. 2026-08-19 17:03 UTCEPSS rescore
  18. 2026-08-19 17:03 UTCEPSS rescore
  19. 2026-08-18 13:47 UTCEPSS rescore
  20. 2026-08-17 13:46 UTCEPSS rescore
  21. 2026-08-16 14:55 UTCEPSS rescore
  22. 2026-08-16 02:13 UTCEPSS rescore
  23. 2026-08-15 01:29 UTCEPSS rescore
  24. 2026-08-13 21:59 UTCEPSS rescore
  25. 2026-08-12 13:50 UTCEPSS rescore
Show 75 more
  1. 2026-08-09 13:46 UTCEPSS rescore
  2. 2026-08-08 16:36 UTCEPSS rescore
  3. 2026-08-06 13:46 UTCEPSS rescore
  4. 2026-08-05 13:54 UTCEG score recompute
  5. 2026-08-05 13:54 UTCVendor advisory
  6. 2026-08-05 13:54 UTCGHSA enrichment
  7. 2026-08-04 15:09 UTCEPSS rescore
  8. 2026-08-04 10:37 UTCEPSS rescore
  9. 2026-08-03 10:35 UTCEPSS rescore
  10. 2026-08-02 02:26 UTCEPSS rescore
  11. 2026-08-01 04:15 UTCEPSS rescore
  12. 2026-07-30 16:27 UTCEPSS rescore
  13. 2026-07-30 07:09 UTCEG score recompute
  14. 2026-07-30 07:09 UTCVendor advisory
  15. 2026-07-30 07:08 UTCGHSA enrichment
  16. 2026-07-30 06:24 UTCNVD updateCVSS v3 → 4.7 · severity → MEDIUM
  17. 2026-07-30 01:29 UTCEPSS rescore
  18. 2026-07-28 15:35 UTCEPSS rescore
  19. 2026-07-25 14:17 UTCEPSS rescore
  20. 2026-07-25 14:17 UTCEPSS rescore
  21. 2026-07-24 14:17 UTCEPSS rescore
  22. 2026-07-24 02:11 UTCOSV refresh
  23. 2026-07-23 02:54 UTCEG score recompute
  24. 2026-07-22 14:07 UTCEPSS rescore
  25. 2026-07-22 14:07 UTCEPSS rescore
  26. 2026-07-21 15:24 UTCEPSS rescore
  27. 2026-07-20 17:07 UTCEPSS rescore
  28. 2026-07-19 14:30 UTCEPSS rescore
  29. 2026-07-19 14:30 UTCEPSS rescore
  30. 2026-07-19 02:28 UTCEPSS rescore
  31. 2026-07-19 02:28 UTCEPSS rescore
  32. 2026-07-18 10:04 UTCEPSS rescore
  33. 2026-07-18 10:04 UTCEPSS rescore
  34. 2026-07-16 17:02 UTCEPSS rescore
  35. 2026-07-15 16:57 UTCEPSS rescore
  36. 2026-07-15 16:57 UTCEPSS rescore
  37. 2026-07-13 22:29 UTCEPSS rescore
  38. 2026-07-13 22:29 UTCEPSS rescore
  39. 2026-07-13 06:12 UTCEPSS rescore
  40. 2026-07-09 19:09 UTCEPSS rescore
  41. 2026-07-09 19:09 UTCEPSS rescore
  42. 2026-07-07 13:45 UTCEPSS rescore
  43. 2026-07-06 20:34 UTCOSV refresh
  44. 2026-07-06 16:27 UTCEPSS rescore
  45. 2026-07-06 16:27 UTCEPSS rescore
  46. 2026-07-06 02:23 UTCEPSS rescore
  47. 2026-07-05 02:30 UTCEPSS rescore
  48. 2026-07-04 06:30 UTCEPSS rescore
  49. 2026-07-01 15:06 UTCEPSS rescore
  50. 2026-07-01 15:06 UTCEPSS rescore
  51. 2026-06-30 23:22 UTCEPSS rescore
  52. 2026-06-30 23:22 UTCEPSS rescore
  53. 2026-06-29 14:06 UTCEPSS rescore
  54. 2026-06-29 14:06 UTCEPSS rescore
  55. 2026-06-28 14:07 UTCEPSS rescore
  56. 2026-06-28 14:07 UTCEPSS rescore
  57. 2026-06-28 04:55 UTCEPSS rescore
  58. 2026-06-28 04:55 UTCEPSS rescore
  59. 2026-06-27 03:08 UTCEPSS rescore
  60. 2026-06-27 03:08 UTCEPSS rescore
  61. 2026-06-23 21:32 UTCEPSS rescore
  62. 2026-06-23 21:32 UTCEPSS rescore
  63. 2026-06-21 14:56 UTCEPSS rescore
  64. 2026-06-21 14:56 UTCEPSS rescore
  65. 2026-06-21 01:59 UTCEPSS rescore
  66. 2026-06-21 01:59 UTCEPSS rescore
  67. 2026-06-19 19:25 UTCEPSS rescore
  68. 2026-06-19 19:25 UTCEPSS rescore
  69. 2026-06-18 17:52 UTCEPSS rescore
  70. 2026-06-18 17:52 UTCEPSS rescore
  71. 2026-06-18 08:43 UTCOSV refresh
  72. 2026-06-17 17:52 UTCEPSS rescore
  73. 2026-06-16 17:52 UTCEPSS rescore
  74. 2026-06-16 17:52 UTCEPSS rescore
  75. 2026-06-14 23:18 UTCMITRE cvelistV5

Frequently asked(5)

What is CVE-2025-38085?
CVE-2025-38085 is a medium vulnerability published on June 28, 2025. In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: fix hugepmdunshare() vs GUP-fast race hugepmdunshare() drops a reference on a page table that may have previously been shared across processes, potentially turning it into a normal page table used in another process in…
When was CVE-2025-38085 disclosed?
CVE-2025-38085 was first published in the National Vulnerability Database on June 28, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-38085 actively exploited?
CVE-2025-38085 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.4% of all scored CVEs.
What is the CVSS score of CVE-2025-38085?
CVE-2025-38085 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2025-38085?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-38085, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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