CVE-2025-40055: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-40055DEBIAN-CVE-2025-40055
Published 28-10-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-40055 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.5% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.23%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 52 · Related 47
DLA-4379-1DLA-4404-1DSA-6053-1MGASA-2025-0309MGASA-2025-0310OPENSUSE-SU-2025:15702-1

Timeline

  1. 28-10-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix double free in user_cluster_connect() user_cluster_disconnect() frees "conn->cc_private" which is "lc" but then the error handling frees "lc" a second time. Set "lc" to NULL on this path to avoid a double free.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

+0.01 pp

From 0.21% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu153 products
  • linuxAll versions (No fix recorded) | < 5.15.0-170.180 | < 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1100.107 | < 6.8.0-1050.53 | < 6.17.0-1007.7
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.158-1 | < 6.12.57-1 | < 6.17.6-1
Linux1 product
  • linux≥ c994c2ebdbbc391a42f177c8eb7882ebf3f142d8, < 283333079d96c84baa91f0c62b5e0cbec246b7a2 | ≥ c994c2ebdbbc391a42f177c8eb7882ebf3f142d8, < f992bc72f681c32a682d474a29c2135a64d4f4e5 | ≥ c994c2ebdbbc391a42f177c8eb7882ebf3f142d8, < 827c8efa0d1afe817b90f3618afff552e88348d2 | ≥ c994c2ebdbbc391a42f177c8eb7882ebf3f142d8, < bfe011297ddd2d0cd64752978baaa0c04cd20573 | ≥ c994c2ebdbbc391a42f177c8eb7882ebf3f142d8, < 7e76fe9dfadbc00364d7523d5a109e9d3e4a7db2 | ≥ c994c2ebdbbc391a42f177c8eb7882ebf3f142d8, < 694d5b401036a614f8080085a9de6f86ff0742dc | ≥ c994c2ebdbbc391a42f177c8eb7882ebf3f142d8, < 892f41e12c8689130d552a9eb2b77bafd26484ab | ≥ c994c2ebdbbc391a42f177c8eb7882ebf3f142d8, < 8f45f089337d924db24397f55697cda0e6960516 | 3.14

3 vendors · 155 products

References

41 links
Show all 41 references