7.8

CVE-2025-40024: linux

CVSS: 7.8v3.1HighDeferred
AliasesUBUNTU-CVE-2025-40024DEBIAN-CVE-2025-40024
Published 24-10-2025Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2025-40024 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 4.1% 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
0.15%
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 25 · Related 23
MGASA-2025-0309MGASA-2025-0310OPENSUSE-SU-2025:20172-1SUSE-SU-2026:0278-1SUSE-SU-2026:0281-1SUSE-SU-2026:0293-1

Timeline

  1. 24-10-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: vhost: Take a reference on the task in struct vhost_task. vhost_task_create() creates a task and keeps a reference to its task_struct. That task may exit early via a signal and its task_struct will be released. A pending vhost_task_wake() will then attempt to wake the task and access a task_struct which is no longer there. Acquire a reference on the task_struct while creating the thread and release the reference while the struct vhost_task itself is removed. If the task exits early due to a signal, then the vhost_task_wake() will still access a valid task_struct. The wake is safe and will be skipped in this case.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

+0.01 pp

From 0.14% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.15%

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

Ubuntu121 products
  • linux< 6.8.0-106.106 | < 6.17.0-6.6
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1050.53 | < 6.17.0-1003.3
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.12.57-1 | < 6.16.10-1
Linux1 product
  • linux≥ f9010dbdce911ee1f1af1398a24b1f9f992e0080, < 82a1463c968b1a6ae598a4f2fcef17b71bb7d3a0 | ≥ f9010dbdce911ee1f1af1398a24b1f9f992e0080, < d2be773a92874a070215b51b730cb2b1eaa8fae2 | ≥ f9010dbdce911ee1f1af1398a24b1f9f992e0080, < 7ce635b3d3aba43296b62b5a2d97c008bc51cbd2 | ≥ f9010dbdce911ee1f1af1398a24b1f9f992e0080, < afe16653e05db07d658b55245c7a2e0603f136c0 | 6.4

3 vendors · 123 products

References

19 links
Show all 19 references