CVE-2025-40056: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-40056DEBIAN-CVE-2025-40056
Published 28-10-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-40056 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.3% 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
0.22%
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 36 · Related 32
DLA-4379-1DSA-6053-1MGASA-2025-0309MGASA-2025-0310OPENSUSE-SU-2025:15702-1OPENSUSE-SU-2025:20091-1

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: vhost: vringh: Fix copy_to_iter return value check The return value of copy_to_iter can't be negative, check whether the copied length is equal to the requested length instead of checking for negative values.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

+0.01 pp

From 0.20% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.22%

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

Ubuntu127 products
  • linux< 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 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≥ 309bba39c945ac8ab8083ac05cd6cfe5822968e0, < bd71e7e0a612740e4de5524880c7cd40293af5f7 | ≥ 309bba39c945ac8ab8083ac05cd6cfe5822968e0, < 781226e11d5bdea0d69c7b5aa3cda874093c73b8 | ≥ 309bba39c945ac8ab8083ac05cd6cfe5822968e0, < b3a950d236e98440c07405ba597b11bce56a8050 | ≥ 309bba39c945ac8ab8083ac05cd6cfe5822968e0, < 68aac2b335d474b938d154b9c95cbc58838cb2ce | ≥ 309bba39c945ac8ab8083ac05cd6cfe5822968e0, < 439263376c2c4e126cac0d07e4987568de4eaba5 | 6.0

3 vendors · 129 products

References

25 links
Show all 25 references