Use-after-free in Linux kernel - CVE-2026-89441
Published: September 12, 2026
Vulnerability identifier: #VU149368
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89441
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a use-after-free condition.
The vulnerability exists due to a use-after-free in carddet_work in the VIA SD/MMC driver when queued card-detect work executes after driver removal. A local privileged user can trigger device removal while card-detect work is pending to cause a use-after-free condition.
Affected software
Linux kernel
How to mitigate CVE-2026-89441
Install security update from vendor's repository.