Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f9010dbdce911ee1f1af1398a24b1f9f992e0080 before 82a1463c968b1a6ae598a4f2fcef17b71bb7d3a0; affected f9010dbdce911ee1f1af1398a24b1f9f992e0080 before d2be773a92874a070215b51b730cb2b1eaa8fae2; affected f9010dbdce911ee1f1af1398a24b1f9f992e0080 before 7ce635b3d3aba43296b62b5a2d97c008bc51cbd2; affected f9010dbdce911ee1f1af1398a24b1f9f992e0080 before afe16653e05db07d658b55245c7a2e0603f136c0 |
| Linux / Linux | affected 6.4; unaffected 0 before 6.4; unaffected 6.6.109 through 6.6.*; unaffected 6.12.50 through 6.12.*; unaffected 6.16.10 through 6.16.*; unaffected 6.17 through * |
CWE
No CWE identifiers supplied.