5.5

CVE-2025-22000: mm/huge_memory: drop beyond-EOF folios with the right number of refs

Modified
AliasesUBUNTU-CVE-2025-22000DEBIAN-CVE-2025-22000
Published 03-04-2025Last modified 11-05-2026

Vulnerability summary

CVE-2025-22000 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.19%
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 4 · Related 4
USN-7605-1USN-7605-2USN-7606-1USN-7628-1

Timeline

  1. 03-04-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: drop beyond-EOF folios with the right number of refs When an after-split folio is large and needs to be dropped due to EOF, folio_put_refs(folio, folio_nr_pages(folio)) should be used to drop all page cache refs. Otherwise, the folio will not be freed, causing memory leak. This leak would happen on a filesystem with blocksize > page_size and a truncate is performed, where the blocksize makes folios split to >0 order ones, causing truncated folios not being freed.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.19% 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.

Ubuntu83 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ c010d47f107f609b9f4d6a103b6dfc53889049e9, < 86368616a9ce51f6b41efa251b6e066893851d67 | ≥ c010d47f107f609b9f4d6a103b6dfc53889049e9, < 92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e | ≥ c010d47f107f609b9f4d6a103b6dfc53889049e9, < 14efb4793519d73fb2902bb0ece319b886e4b4b9 | 6.9
  • linux_kernel≥ 6.9, < 6.12.21 | ≥ 6.13, < 6.13.9 | 6.14:rc1 | 6.14:rc2 | 6.14:rc3 | 6.14:rc4 | 6.14:rc5 | 6.14:rc6 | 6.14:rc7
Debian1 product
  • linux< 6.12.21-1

3 vendors · 86 products

References

11 links
Show all 11 references