7.8

CVE-2025-40051: linux

CVSS: 7.8v3.1HighDeferred
AliasesUBUNTU-CVE-2025-40051DEBIAN-CVE-2025-40051
Published 28-10-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-40051 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.4% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.17%
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. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: vhost: vringh: Modify the return value check The return value of copy_from_iter and copy_to_iter can't be negative, check whether the copied lengths are equal.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.01 pp

From 0.15% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.17%

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, < db042925a5ab7a550b710addeadbf6f72e3a8a4b | ≥ 309bba39c945ac8ab8083ac05cd6cfe5822968e0, < 78dc7362662fedaa1928fb8e4f27401c8322905d | ≥ 309bba39c945ac8ab8083ac05cd6cfe5822968e0, < baa37b1c7e29546f79c39bef0d18c4edc9f39bb1 | ≥ 309bba39c945ac8ab8083ac05cd6cfe5822968e0, < cfa0654402c06d086201a9ff167eb95da5844fc3 | ≥ 309bba39c945ac8ab8083ac05cd6cfe5822968e0, < 82a8d0fda55b35361ee7f35b54fa2b66d7847d2b | 6.0

3 vendors · 129 products

References

25 links
Show all 25 references