CVE-2026-74520

In the Linux kernel, the following vulnerability has been resolved: iommu/iommufd: Fix IOPF group ownership UAF iopf_group_alloc() links each last-page IOPF group into the generic IOPF pending list before invoking the domain fault handler. iommufd_fault_iopf_handler() also queued an accepted group in the IOMMUFD deliver list without removing it from the generic pending list. When detach or HWPT replacement drops the device's IOPF reference count to zero, an IOMMU driver may call iopf_queue_remove_device(). That function responds to and frees groups through the generic pending list without removing the same groups from IOMMUFD's deliver list or response xarray. A later read, response, or cleanup can then access the freed group and cause a UAF. Fix this by dequeuing an accepted group from the generic pending list before IOMMUFD queues it for userspace response. Make iopf_group_response() send a response regardless of pending-list membership, so the dequeued group can still be completed by IOMMUFD.

• https://git.kernel.org/stable/c/4e74a369236424114b94cf6a9f5ff9e848b430b4
• https://git.kernel.org/stable/c/6da8f37419dd4c456f26fc203f04e000186f4b3d
• https://git.kernel.org/stable/c/738e6f32e61d80b554e37015ecb7bc620b88001c

Published

Aug 15, 2026

Last Modified

Aug 17, 2026

Status

Received

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-74515In the Linux kernel, the following vulnerability has been re…8.8
• CVE-2026-74516In the Linux kernel, the following vulnerability has been re…8.2
• CVE-2026-74517In the Linux kernel, the following vulnerability has been re…9.3
• CVE-2026-74518In the Linux kernel, the following vulnerability has been re…7.8
• CVE-2026-74519In the Linux kernel, the following vulnerability has been re…7.8
• CVE-2026-7452A maliciously crafted WRL file, when parsed through Autodesk…7.8
• CVE-2026-74521In the Linux kernel, the following vulnerability has been re…9.1
• CVE-2026-74522In the Linux kernel, the following vulnerability has been re…8.8
• CVE-2026-74523In the Linux kernel, the following vulnerability has been re…7.5
• CVE-2026-74524In the Linux kernel, the following vulnerability has been re…
• CVE-2026-74525In the Linux kernel, the following vulnerability has been re…
• CVE-2026-74526In the Linux kernel, the following vulnerability has been re…