Use-after-free in Linux kernel - CVE-2026-43217
Published: May 7, 2026
Vulnerability identifier: #VU130515
CSH Severity: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-43217
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a use-after-free in iris_kill_session and stop_streaming when handling session stop operations after session_close. A local user can trigger stop_streaming after session_close to cause a denial of service.
The issue can lead to a kernel crash if stop_streaming is called after the session has already been closed.
Remediation
Install security update from vendor's repository.