SB2026072758 - Use-after-free in Linux kernel iio temperature driver

Description

This security bulletin contains information about 1 vulnerability.

1) Use-after-free (CVE-ID: CVE-2026-64492)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in the tmp006 driver trigger registration logic when unloading the module after registering the DRDY trigger. A local user can trigger module unload after the trigger has been registered to cause a denial of service.

The issue occurs because the driver has no .remove() callback, leaving a dangling entry in the global trigger list after the trigger memory is freed.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/3c5eed894efd93d68d7f6a359a81ddef0e928774
• https://git.kernel.org/stable/c/a4f8491da9563ba6eb77969ac26fc7052114c476
• https://git.kernel.org/stable/c/d90f868f56a16e10eedc6552f48d99dff4d275b7