Use-after-free in Linux kernel - CVE-2026-90029
Published: September 16, 2026
Vulnerability identifier: #VU150266
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90029
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an attacker with physical access to trigger a use-after-free.
The vulnerability exists due to a use-after-free in the Realtek USB card reader driver's suspend timer handling when disconnecting a USB device while the timer callback is running. An attacker with physical access can disconnect the device while the callback rearms the timer to trigger a use-after-free.
The issue applies to configurations with Realtek automatic power management enabled.
Affected software
Linux kernel
How to mitigate CVE-2026-90029
Install security update from vendor's repository.