SB2026060440 - Use-after-free in Linux kernel power supply driver

Description

This security bulletin contains information about 1 vulnerability.

1) Use-after-free (CVE-ID: CVE-2026-46246)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

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

The vulnerability exists due to a use-after-free in the pm8916_lbc charger IRQ handler when handling an interrupt during device removal. A local user can trigger the race condition to cause a denial of service or corrupt memory.

The issue occurs because the extcon handle can be freed before the IRQ handler is unregistered, allowing extcon_set_state_sync() to be called on a freed handle.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/23067259919663580c6f81801847cfc7bd54fd1f
• https://git.kernel.org/stable/c/47abfc207ab02cf1297257e282e8048da63f0d08
• https://git.kernel.org/stable/c/48e0f68b50c344bb2d78d65dd98f93e41276ee00
• https://git.kernel.org/stable/c/9fab0120907e6965168e55b1e17cb9dfaf262b86