CVE-2026-80687 iommufd/viommu: Release the igroup lock on the vdevice_size error path

In the Linux kernel, the following vulnerability has been resolved: iommufd/viommu: Release the igroup lock on the vdevicesize error path iommufdvdeviceallocioctl takes idev-igroup-lock, then validates the driver's vdevicesize against the core structure size with a WARNONONCE. On failure that gua...

CVE-2026-80687

CVE-2026-80687 is a deadlock vulnerability in the Linux kernel 's iommufd/viommu subsystem. The function iommufd_vdevice_alloc_ioctl() acquires idev->igroup->lock, then validates the driver's vdevice_size against the core structure size. On failure, a WARN_ON_ONCE guard jumps to out_put_ide...

EUVD-2026-67563

In the Linux kernel, the following vulnerability has been resolved: iommufd/viommu: Release the igroup lock on the vdevicesize error path iommufdvdeviceallocioctl takes idev-igroup-lock, then validates the driver's vdevicesize against the core structure size with a WARNONONCE. On failure that gua...

CVE-2026-80687

In the Linux kernel, the following vulnerability has been resolved: iommufd/viommu: Release the igroup lock on the vdevicesize error path iommufdvdeviceallocioctl takes idev-igroup-lock, then validates the driver's vdevicesize against the core structure size with a WARNONONCE. On failure that gua...

CVE-2026-80633 iommufd: Take dma_resv lock before dma_buf_unpin() in release path

In the Linux kernel, the following vulnerability has been resolved: iommufd: Take dmaresv lock before dmabufunpin in release path dmabufunpin requires the caller to hold the exporter's dmaresv lock: void dmabufunpinstruct dmabufattachment attach ... dmaresvasserthelddmabuf-resv;...

CVE-2026-80633

CVE-2026-80633 is a locking bug in the Linux kernel iommufd subsystem. The function iopt_release_pages() calls dma_buf_unpin() without holding the required dma_resv lock, causing a kernel WARN every time iommufd_ioas_destroy() or iommufd_ioas_unmap() releases the last reference on a DMABUF-backed...

EUVD-2026-67509

In the Linux kernel, the following vulnerability has been resolved: iommufd: Take dmaresv lock before dmabufunpin in release path dmabufunpin requires the caller to hold the exporter's dmaresv lock: void dmabufunpinstruct dmabufattachment attach ... dmaresvasserthelddmabuf-resv;...

CVE-2026-80633 iommufd: Take dma_resv lock before dma_buf_unpin() in release path

In the Linux kernel, the following vulnerability has been resolved: iommufd: Take dmaresv lock before dmabufunpin in release path dmabufunpin requires the caller to hold the exporter's dmaresv lock: void dmabufunpinstruct dmabufattachment attach ... dmaresvasserthelddmabuf-resv;...

CVE-2026-80633

In the Linux kernel, the following vulnerability has been resolved: iommufd: Take dmaresv lock before dmabufunpin in release path dmabufunpin requires the caller to hold the exporter's dmaresv lock: void dmabufunpinstruct dmabufattachment attach ... dmaresvasserthelddmabuf-resv;...

CVE-2026-80687: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: iommufd/viommu: Release the igroup lock on the vdevicesize error path iommufdvdeviceallocioctl takes idev-igroup-lock, then validates the driver's vdevicesize against the core structure size with a WARNONONCE. On failure that gua...

PT-2026-82933

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the iommufd component where the iopt release pages function calls dma buf unpin without first acquiring the required dma resv lock. Because dma buf unpin requires the...

PT-2026-82987

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the iommufd/viommu component where the iommufd vdevice alloc ioctl function fails to release the idev-igroup-lock during a specific error path. When the driver's vdevi...

CVE-2026-80687: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: iommufd/viommu: Release the igroup lock on the vdevicesize error path iommufdvdeviceallocioctl takes idev-igroup-lock, then validates the driver's vdevicesize against the core structure size with a WARNONONCE. On failure that gua...

CVE-2026-80633: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: iommufd: Take dmaresv lock before dmabufunpin in release path dmabufunpin requires the caller to hold the exporter's dmaresv lock: void dmabufunpinstruct dmabufattachment attach ... dmaresvasserthelddmabuf-resv;...

SUSE CVE-2026-74328

In the Linux kernel, the following vulnerability has been resolved: iommufd: Destroy the pages content after detaching from dmabuf Sashiko points out this has gotten out of order, the mutex could still be in use through the dmabuf invalidation callbacks. Don't destroy any of the pages content unt...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu-v3-iommufd: It is required that exactly one Stream ID be used for a vDEVICE. The function armvsmmuvsidtosid maps a guest’s vSID to a single physical Stream ID, taking it from master-streams0. This assumes that a...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: iommu/iommufd: Fixed UAF in group ownership handling for IOPF. iopfgroupalloc links each last-page IOPF group to the generic pending list before invoking the domain fault handler. iommufdfaultiopfhandler also queues the accept...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: iommufd: The content of the pages should no longer be destroyed after detaching from dmabuf. Sashiko points out that this issue was previously out of order; the mutex could still be in use through the dmabuf invalidation callback...

SUSE CVE-2026-74520

In the Linux kernel, the following vulnerability has been resolved: iommu/iommufd: Fix IOPF group ownership UAF iopfgroupalloc links each last-page IOPF group into the generic IOPF pending list before invoking the domain fault handler. iommufdfaultiopfhandler also queued an accepted group in the...

The vulnerability of the iommufd/selftest components of the Linux operating system allows a hacker to trigger a service failure.

The vulnerability of the iommufd/selftest components in the Linux operating system is related to a numerical overflow condition. Exploiting this vulnerability can allow an attacker to cause a service failure...