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CVE Vulnerability Details :

CVE-2026-53189

PUBLISHED

More Info Official Page

Assigner-Linux

Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published At-25 Jun, 2026 | 08:39

Updated At-28 Jun, 2026 | 06:40

▼CVE Numbering Authority (CNA)

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

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().

Affected Products

Vendor

Linux Kernel Organization, Inc

Product

Linux

Repo

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Program Files

mm/huge_memory.c

Default Status

unaffected

Versions

Affected

From fadae2953072e9005c5f1d64e1049edb043494dc before 84b3212b166b446faea27ebebb7161405ffceef9 (git)
From fadae2953072e9005c5f1d64e1049edb043494dc before 108963978a681c0c468d279cac2b930c27672877 (git)
From fadae2953072e9005c5f1d64e1049edb043494dc before 459771c9cf30f378bdbd30fc65d17f7eb931bb59 (git)
From fadae2953072e9005c5f1d64e1049edb043494dc before ae9d4caf6f133e884cf5fcda4982c493b35e5194 (git)
From fadae2953072e9005c5f1d64e1049edb043494dc before 6c29a8ba084e89499ca77b947e07ae817f9c16ce (git)
From fadae2953072e9005c5f1d64e1049edb043494dc before 5f5b604e1e6bde4e889199168ee80fe8306d06ad (git)
From fadae2953072e9005c5f1d64e1049edb043494dc before ed5b030931292c94133437ac5e5ff580e498eabd (git)
From fadae2953072e9005c5f1d64e1049edb043494dc before 8d878059924f12c1bc24556a92ec56add74de3c8 (git)

Vendor

Linux Kernel Organization, Inc

Product

Linux

Repo

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Program Files

mm/huge_memory.c

Default Status

affected

Versions

Affected

4.19

Unaffected

From 0 before 4.19 (semver)
From 5.10.259 through 5.10.* (semver)
From 5.15.210 through 5.15.* (semver)
From 6.1.176 through 6.1.* (semver)
From 6.6.143 through 6.6.* (semver)
From 6.12.94 through 6.12.* (semver)
From 6.18.36 through 6.18.* (semver)
From 7.0.13 through 7.0.* (semver)
From 7.1 through * (original_commit_for_fix)

Metrics

Version	Base score	Base severity	Vector
3.1	7.8	HIGH	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Version: 3.1

Base score: 7.8

Base severity: HIGH

Vector:

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

References

Hyperlink	Resource
https://git.kernel.org/stable/c/84b3212b166b446faea27ebebb7161405ffceef9	N/A
https://git.kernel.org/stable/c/108963978a681c0c468d279cac2b930c27672877	N/A
https://git.kernel.org/stable/c/459771c9cf30f378bdbd30fc65d17f7eb931bb59	N/A
https://git.kernel.org/stable/c/ae9d4caf6f133e884cf5fcda4982c493b35e5194	N/A
https://git.kernel.org/stable/c/6c29a8ba084e89499ca77b947e07ae817f9c16ce	N/A
https://git.kernel.org/stable/c/5f5b604e1e6bde4e889199168ee80fe8306d06ad	N/A
https://git.kernel.org/stable/c/ed5b030931292c94133437ac5e5ff580e498eabd	N/A
https://git.kernel.org/stable/c/8d878059924f12c1bc24556a92ec56add74de3c8	N/A