CVE-2025-37968
Published: May 22, 2025Last modified: May 22, 2025
Description
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.151-r0) |
| 25 LTS | linux-lts | Fixed (6.12.41-r0) | |
| Stream | linux-lts | Fixed (6.12.41-r0) |
References
- https://git.kernel.org/stable/c/1d7def97e7eb65865ccc01bbdf4eb9e6bbe8a5b5
- https://git.kernel.org/stable/c/2c95c8f0959d0a72575eabf2ff888f47ed6d8b77
- https://git.kernel.org/stable/c/748ebd8e61d0bc182c331b8df3887af7285c8a8f
- https://git.kernel.org/stable/c/7ca84f6a22d50bf8b31efe9eb05f9859947266d7
- https://git.kernel.org/stable/c/957e8be112636d9bc692917286e81e54bd87decc
- https://git.kernel.org/stable/c/a9c56ccb7cddfca754291fb24b108a5350a5fbe9
- https://git.kernel.org/stable/c/e791bf216c9e236b34dabf514ec0ede140cca719
- https://git.kernel.org/stable/c/f063a28002e3350088b4577c5640882bf4ea17ea
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html