Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-90242
Published: September 18, 2026
Vulnerability identifier: #VU151236
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-2026-90242
CWE-ID: CWE-772
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to leak an IOPF reference.
The vulnerability exists due to improper resource lifecycle management in the Intel VT-d IOMMU RID domain attachment paths when replacing a RID-level domain. A local user can replace a domain associated with a device to leak an IOPF reference.
The issue occurs when the replaced domain has an IOPF handler; the leaked reference prevents the device from being removed from the IOPF queue when released.
Affected software
Linux kernel
How to mitigate CVE-2026-90242
Install security update from vendor's repository.