CVE-2026-53189

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — Patch released this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

mm/huge_memory: update file PMD counter before folio_put()

__split_huge_pmd_locked() updates the file/shmem RSS counter after dropping the PMD mapping's folio reference. If folio_put() drops the last reference, mm_counter_file() can later read freed folio state via folio_test_swapbacked().

Move the counter update before folio_put().

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

June 25, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Jun 28, 2026
No patch confirmed yet.
generic

mm/huge_memory: update file PMD counter before folio_put() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ed5b030931292c94133437ac5e5ff580e498eabd
generic

mm/huge_memory: update file PMD counter before folio_put() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ae9d4caf6f133e884cf5fcda4982c493b35e5194
generic

mm/huge_memory: update file PMD counter before folio_put() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8d878059924f12c1bc24556a92ec56add74de3c8
generic

mm/huge_memory: update file PMD counter before folio_put() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/84b3212b166b446faea27ebebb7161405ffceef9
generic

mm/huge_memory: update file PMD counter before folio_put() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6c29a8ba084e89499ca77b947e07ae817f9c16ce
generic

mm/huge_memory: update file PMD counter before folio_put() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5f5b604e1e6bde4e889199168ee80fe8306d06ad
generic

mm/huge_memory: update file PMD counter before folio_put() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/459771c9cf30f378bdbd30fc65d17f7eb931bb59
generic

mm/huge_memory: update file PMD counter before folio_put() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/108963978a681c0c468d279cac2b930c27672877

Vendor Advisories for CVE-2026-53189(2)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-rt-0:4.18.0-553.157.1.rt7.498.el8_102026-08-20redhat
redhatkernel-0:4.18.0-553.157.1.el8_102026-08-20redhat
redhatkernel-0:5.14.0-687.41.1.el9_82026-08-20redhat

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 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (142 versions)7.0.13-1—

Additional Vendor Advisories

(2)

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 26× in last 7d / 107× 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 193 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53189?
CVE-2026-53189 is a high vulnerability published on June 25, 2026. In the Linux kernel, the following vulnerability has been resolved: mm/hugememory: update file PMD counter before folioput() splithugepmd_locked() updates the file/shmem RSS counter after dropping the PMD mapping's folio reference. If folio_put() drops the last reference, mmcounterfile() can later…
When was CVE-2026-53189 disclosed?
CVE-2026-53189 was first published in the National Vulnerability Database on June 25, 2026, 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-2026-53189 actively exploited?
CVE-2026-53189 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 97.0% of all scored CVEs.
What is the CVSS score of CVE-2026-53189?
CVE-2026-53189 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-53189?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53189, 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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