Answer in brief
CVE-2025-40024 records a High severity (CVSS 7.8) vulnerability in vhost: Take a reference on the task in struct vhost_task.. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f9010dbdce911ee1f1af1398a24b1f9f992e0080 <82a1463c968b1a6ae598a4f2fcef17b71bb7d3a0 || >=f9010dbdce911ee1f1af1398a24b1f9f992e0080 <d2be773a92874a070215b51b730cb2b1eaa8fae2 || >=f9010dbdce911ee1f1af1398a24b1f9f992e0080 <7ce635b3d3aba43296b62b5a2d97c008bc51cbd2 || >=f9010dbdce911ee1f1af1398a24b1f9f992e0080 <afe16653e05db07d658b55245c7a2e0603f136c0 | 82a1463c968b1a6ae598a4f2fcef17b71bb7d3a0, d2be773a92874a070215b51b730cb2b1eaa8fae2, 7ce635b3d3aba43296b62b5a2d97c008bc51cbd2, afe16653e05db07d658b55245c7a2e0603f136c0 |
| Linux/Linuxgeneric | 6.4 | Not reported |
Published upstream
Oct 24, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.