Use-after-free in Linux kernel - CVE-2026-46246
Published: June 4, 2026
Vulnerability identifier: #VU133344
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2026-46246
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2026-46246
Install security update from vendor's repository.