7.8

CVE-2026-53189: mm/huge_memory: update file PMD counter before folio_put()

Modified
AliasesUBUNTU-CVE-2026-53189DEBIAN-CVE-2026-53189CGA-3qcp-jq7g-5p7g
Published 25-06-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-53189 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 35 · Related 31
MGASA-2026-0312OPENSUSE-SU-2026:21555-1RHSA-2026:57252RHSA-2026:57253RHSA-2026:57254RHSA-2026:61887

Timeline

  1. 25-06-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.13% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu165 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 7.0.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard12 products
  • linux-aws-6.12< 6.12.95-r0
  • linux-aws-6.18< 6.18.38-r0
  • linux-azure-6.18< 6.18.38-r0
  • linux-gcp-6.12< 6.12.95-r0
  • linux-gcp-6.18< 6.18.38-r0
Linux2 products
  • linux≥ fadae2953072e9005c5f1d64e1049edb043494dc, < 84b3212b166b446faea27ebebb7161405ffceef9 | ≥ fadae2953072e9005c5f1d64e1049edb043494dc, < 108963978a681c0c468d279cac2b930c27672877 | ≥ fadae2953072e9005c5f1d64e1049edb043494dc, < 459771c9cf30f378bdbd30fc65d17f7eb931bb59 | ≥ fadae2953072e9005c5f1d64e1049edb043494dc, < ae9d4caf6f133e884cf5fcda4982c493b35e5194 | ≥ fadae2953072e9005c5f1d64e1049edb043494dc, < 6c29a8ba084e89499ca77b947e07ae817f9c16ce | ≥ fadae2953072e9005c5f1d64e1049edb043494dc, < 5f5b604e1e6bde4e889199168ee80fe8306d06ad | ≥ fadae2953072e9005c5f1d64e1049edb043494dc, < ed5b030931292c94133437ac5e5ff580e498eabd | ≥ fadae2953072e9005c5f1d64e1049edb043494dc, < 8d878059924f12c1bc24556a92ec56add74de3c8 | 4.19
  • linux_kernel≥ 4.19, < 5.10.259 | ≥ 5.11, < 5.15.210 | ≥ 5.16, < 6.1.176 | ≥ 6.2, < 6.6.143 | ≥ 6.7, < 6.12.94 | ≥ 6.13, < 6.18.36 | ≥ 6.19, < 7.0.13 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4 | 7.1:rc5 | 7.1:rc6
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.13-1

4 vendors · 180 products

References

33 links
Show all 33 references