8.8

CVE-2025-40342: linux

CVSS: 8.8v3.1HighDeferred
AliasesUBUNTU-CVE-2025-40342DEBIAN-CVE-2025-40342
Published 09-12-2025Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2025-40342 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 28.9% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.37%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 43 · Related 39
DLA-4404-1DLA-4436-1MGASA-2026-0017MGASA-2026-0018OPENSUSE-SU-2026:20145-1SUSE-SU-2026:0278-1

Timeline

  1. 09-12-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-fc: use lock accessing port_state and rport state nvme_fc_unregister_remote removes the remote port on a lport object at any point in time when there is no active association. This races with with the reconnect logic, because nvme_fc_create_association is not taking a lock to check the port_state and atomically increase the active count on the rport.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.37%

Chance of exploitation in the next 30 days

Percentile

29%

Versus all other CVEs

30-day change

0.00 pp

From 0.37% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.37%

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

Ubuntu152 products
  • linuxAll versions (No fix recorded) | < 5.15.0-173.183 | < 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1103.110 | < 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< 6.1.159-1 | < 6.12.63-1 | < 6.17.8-1
Linux1 product
  • linux≥ e399441de9115cd472b8ace6c517708273ca7997, < de3d91af47bc015031e7721b100a29989f6498a5 | ≥ e399441de9115cd472b8ace6c517708273ca7997, < e8cde03de8674b05f2c5e0870729049eba517800 | ≥ e399441de9115cd472b8ace6c517708273ca7997, < 4253e0a4546138a2bf9cb6acf66b32fee677fc7c | ≥ e399441de9115cd472b8ace6c517708273ca7997, < 25f4bf1f7979a7871974fd36c79d69ff1cf4b446 | ≥ e399441de9115cd472b8ace6c517708273ca7997, < 9950af4303942081dc8c7a5fdc3688c17c7eb6c0 | ≥ e399441de9115cd472b8ace6c517708273ca7997, < a2f7fa75c4a2a07328fa22ccbef461db76790b55 | ≥ e399441de9115cd472b8ace6c517708273ca7997, < 891cdbb162ccdb079cd5228ae43bdeebce8597ad | 4.10

3 vendors · 154 products

References

37 links
Show all 37 references