Use-after-free in Linux kernel - CVE-2026-68372
Published: August 12, 2026
Vulnerability identifier: #VU141672
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2026-68372
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a use-after-free in the USB Type-C connector handling in drivers/usb/core/port.c when processing Thunderbolt dock unplug and concurrent partner-disconnect events. A local user can trigger a crafted hot-unplug race to cause a denial of service.
Exploitation requires a race between component unbind, USB disconnect, and UCSI partner-disconnect handling during dock hot-plug events.
Affected software
Linux kernel
Ubuntu
linux-oem-7.0 (Ubuntu package)
Ubuntu
linux-oem-7.0 (Ubuntu package)
How to mitigate CVE-2026-68372
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1013.13
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1013.13