CVE-2025-40080: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-40080DEBIAN-CVE-2025-40080
Published 28-10-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-40080 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.1% 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
0.21%
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: nbd: restrict sockets to TCP and UDP Recently, syzbot started to abuse NBD with all kinds of sockets. Commit cf1b2326b734 ("nbd: verify socket is supported during setup") made sure the socket supported a shutdown() method. Explicitely accept TCP and UNIX stream sockets.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

+0.01 pp

From 0.19% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.21%

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) | < 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 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≥ cf1b2326b734896734c6e167e41766f9cee7686a, < c365e8f20f4201d873a70385bd919f0fb531e960 | ≥ cf1b2326b734896734c6e167e41766f9cee7686a, < 4f9e6ff6319dbcebea64b50af0304cf0ad7e97e7 | ≥ cf1b2326b734896734c6e167e41766f9cee7686a, < 37ad11f20e164c23ce827dd455b42c0fdd29685c | ≥ cf1b2326b734896734c6e167e41766f9cee7686a, < 808e2335bc1cf2293b9e36ccc94c267c81509c71 | ≥ cf1b2326b734896734c6e167e41766f9cee7686a, < 9f7c02e031570e8291a63162c6c046dc15ff85b0 | 4df728651b8a99693c69962d8e5a5b9e5a3bbcc7 | 083322455c67d278c56a66b73f1221f004ee600a | 4fa1cbd587ef967812f9d9f6ce46ec1dead7502c | ≥ 4.14.152, < 4.15 | ≥ 4.19.82, < 4.20 | ≥ 5.3.9, < 5.4 | 5.4

3 vendors · 155 products

References

27 links
Show all 27 references