CVE-2025-37968

Medium

In the Linux kernel, the following vulnerability has been resolved: iio: light: opt3001: fix deadlock due to concurrent flag access The threaded IRQ function in this driver is reading the flag twice: once to lock a mutex and once to unlock it. Even though the code setting the flag is designed to prevent it, there are subtle cases where the flag could be true at the mutex_lock stage and false at the mutex_unlock stage. This results in the mutex not being unlocked, resulting in a deadlock. Fix it by making the opt3001_irq() code generally more robust, reading the flag into a variable and using the variable value at both stages.

Package Linux Kernel
Published 2025-05-20
Last modified 2026-05-12
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-667

CVE-2025-37968 is a Improper Locking vulnerability

What is Improper Locking?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.3 and later are affected. Fixed in 5.4.299, 5.10.243, 5.15.192, 6.1.151, 6.6.105, 6.12.30, 6.14.7, 6.15 and their respective stable series.

Affected from
≥ 4.3
Fixed in
✓ 5.4.299 5.4.x ✓ 5.10.243 5.10.x ✓ 5.15.192 5.15.x ✓ 6.1.151 6.1.x ✓ 6.6.105 6.6.x ✓ 6.12.30 6.12.x ✓ 6.14.7 6.14.x ✓ 6.15

References

The following references provide additional information about CVE-2025-37968 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

8 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2025-37968?

    CVE-2025-37968 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Improper Locking flaw (CWE-667) . It affects Linux kernel versions from 4.3 onward and has been patched in 5.4.299, 5.10.243, 5.15.192 and others. CVE-2025-37968 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2025-37968?

    CVE-2025-37968 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2025-37968?

    Yes — CVE-2025-37968 has been patched. Fixed versions include 5.4.299, 5.10.243, 5.15.192 and others. If you are running Linux kernel 4.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2025-37968 actively exploited?

    No — CVE-2025-37968 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

  • What is Improper Locking (CWE-667)?

    The product does not properly acquire or release a lock, which can lead to unexpected behaviour. View CWE-667 on MITRE CWE →

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