CVE-2025-37906

ublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd

Description

In the Linux kernel, the following vulnerability has been resolved: ublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd ublk_cancel_cmd() calls io_uring_cmd_done() to complete uring_cmd, but we may have scheduled task work via io_uring_cmd_complete_in_task() for dispatching request, then kernel crash can be triggered. Fix it by not trying to canceling the command if ublk block request is started.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/fb2eb9ddf556f93fef45201e1f9d2b8674bcc975
https://git.kernel.org/stable/c/f40139fde5278d81af3227444fd6e76a76b9506d

Frequently Asked Questions

What is the severity of CVE-2025-37906?: CVE-2025-37906 has not yet been assigned a CVSS score.
How to fix CVE-2025-37906?: To fix CVE-2025-37906, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-37906 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-37906 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-37906?: CVE-2025-37906 affects Linux Linux, Linux Linux.

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