What is the severity of CVE-2025-37880?

CVE-2025-37880 is considered a medium severity vulnerability due to its impact on scheduling in time-travel mode.

How do I fix CVE-2025-37880?

To fix CVE-2025-37880, users should update to the latest version of the Linux kernel that addresses this vulnerability.

What systems are affected by CVE-2025-37880?

CVE-2025-37880 affects systems running the affected Linux kernel versions that utilize time-travel mode.

What is the impact of CVE-2025-37880 on system performance?

The impact of CVE-2025-37880 may lead to improper scheduling behavior, potentially affecting system performance and responsiveness.

Is CVE-2025-37880 a remote vulnerability?

CVE-2025-37880 is not remotely exploitable as it requires user space interaction for the sched_yield function.

Vulnerability/
CVE-2025-37880

9/5/2025

CVE-2025-37880: um: work around sched_yield not yielding in time-travel mode

First published: Fri May 09 2025(Updated: )

In the Linux kernel, the following vulnerability has been resolved: um: work around sched_yield not yielding in time-travel mode sched_yield by a userspace may not actually cause scheduling in time-travel mode as no time has passed. In the case seen it appears to be a badly implemented userspace spinlock in ASAN. Unfortunately, with time-travel it causes an extreme slowdown or even deadlock depending on the kernel configuration (CONFIG_UML_MAX_USERSPACE_ITERATIONS). Work around it by accounting time to the process whenever it executes a sched_yield syscall.

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected Software	Affected Version	How to fix
Linux Kernel

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Frequently Asked Questions

What is the severity of CVE-2025-37880?
CVE-2025-37880 is considered a medium severity vulnerability due to its impact on scheduling in time-travel mode.
How do I fix CVE-2025-37880?
To fix CVE-2025-37880, users should update to the latest version of the Linux kernel that addresses this vulnerability.
What systems are affected by CVE-2025-37880?
CVE-2025-37880 affects systems running the affected Linux kernel versions that utilize time-travel mode.
What is the impact of CVE-2025-37880 on system performance?
The impact of CVE-2025-37880 may lead to improper scheduling behavior, potentially affecting system performance and responsiveness.
Is CVE-2025-37880 a remote vulnerability?
CVE-2025-37880 is not remotely exploitable as it requires user space interaction for the sched_yield function.

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