Description
In the Linux kernel, the following vulnerability has been resolved: io_uring: always do atomic put from iowq io_uring always switches requests to atomic refcounting for iowq execution before there is any parallilism by setting REQ_F_REFCOUNT, and the flag is not cleared until the request completes. That should be fine as long as the compiler doesn't make up a non existing value for the flags, however KCSAN still complains when the request owner changes oter flag bits: BUG: KCSAN: data-race in io_req_task_cancel / io_wq_free_work ... read to 0xffff888117207448 of 8 bytes by task 3871 on cpu 0: req_ref_put_and_test io_uring/refs.h:22 [inline] Skip REQ_F_REFCOUNT checks for iowq, we know it's set.
INFO
Published Date :
2025-05-08T06:26:04.461Z
Last Modified :
2025-05-12T14:19:31.108Z
Source :
Linux
AFFECTED PRODUCTS
The following products are affected by CVE-2025-37804 vulnerability.
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REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2025-37804.
