Use-after-free in Linux kernel - CVE-2026-93189
Published: September 18, 2026
Vulnerability identifier: #VU150799
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93189
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to trigger a use-after-free condition.
The vulnerability exists due to failure to quiesce HID input before freeing objects in hid_hw_stop() in the HID core when a driver probe unwinds after HID input has been enabled while HID reports are in flight. A local user can trigger a failed driver initialization while HID reports are being processed to trigger a use-after-free condition.
Affected software
Linux kernel
How to mitigate CVE-2026-93189
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/02246d8b462fd9bd90bc7ae7d6cab1acf69bcb87
- https://git.kernel.org/stable/c/0744cb9520aade37e78f69134f3111086158f1d2
- https://git.kernel.org/stable/c/0fecd89f979a8653b9a5b0816570329b7a94a081
- https://git.kernel.org/stable/c/544ebb25bd58f67e821573412ab7a982b9e02211
- https://git.kernel.org/stable/c/6787f1828f5616f17250e108c0031fb96fd2cfe6
- https://git.kernel.org/stable/c/92cca302a4eaf65d1b38b3fb600b4ee5eb856a51
- https://git.kernel.org/stable/c/a4bc41504690b7d7064931909874f5b98cd148b6
- https://git.kernel.org/stable/c/c876c437d188911685d8bed645416f2e86bd0354