SB2026061076 - Improper resource shutdown or release in Linux kernel pmdomain driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper resource shutdown or release (CVE-ID: CVE-2026-46292)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: 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/E:U/U:Clear

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

The vulnerability exists due to improper resource shutdown in genpd_dev_pm_detach() for virtual devices in the generic PM domain core when detaching a device from a PM domain after attachment through genpd_dev_pm_attach_by_id(). A local user can trigger device detach handling to cause a denial of service.

In worst cases, the issue may result in a NULL pointer dereference in genpd_runtime_suspend().

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/26735dfdd8930d9ef1fa92e590a9bf77726efdf6
• https://git.kernel.org/stable/c/361518a26e4434e879db6ff43bf364795dcbfbff
• https://git.kernel.org/stable/c/51a7dd9cbae9210335ce398642ecaaa52c939eb5
• https://git.kernel.org/stable/c/707cb5df3eab32ddc52979418f7ace62941e6381
• https://git.kernel.org/stable/c/8d44391a7f29e4601e8243f13498d0219bab2576