UBUNTU-CVE-2026-64291

In the Linux kernel, the following vulnerability has been resolved: iommufd: Set veventqdepth upper bound iommufdveventqalloc accepts any !0 veventqdepth from userspace, with an upper bound at U32MAX. This leaves a vulnerability where userspace can allocate excessively large queues to exhaust...

UBUNTU-CVE-2026-64290

In the Linux kernel, the following vulnerability has been resolved: iommufd: Break the loop on failure in iommufdfaultfopsread On a copytouser failure inside the inner listforeachentry, only the inner loop breaks; the outer while re-fetches the just-restored fault group and retries the failing...

PT-2026-64512

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the iommufd veventq alloc function where it accepts any non-zero veventq depth from userspace, with an upper bound set at U32 MAX. This allows userspace to allocate...

kernel: iommufd: Fix race during abort for file descriptors

A flaw was found in the Linux kernel such that the IOMMU file-descriptor subsystem, when aborting the allocation of a new object before installing the file descriptor, the code calls fput on the file and then immediately frees the associated object kfree, but the object is still referenced by the...

CVE-2023-53795

In the Linux kernel, the following vulnerability has been resolved: iommufd: IOMMUFDDESTROY should not increase the refcount syzkaller found a race where IOMMUFDDESTROY increments the refcount: obj = iommufdgetobjectucmd-ictx, cmd-id, IOMMUFDOBJANY; if ISERRobj return PTRERRobj;...

AZL-66632 CVE-2025-38625 affecting package kernel for versions less than 6.6.104.2-1

In the Linux kernel, the following vulnerability has been resolved: vfio/pds: Fix missing detachioas op When CONFIGIOMMUFD is enabled and a device is bound to the pdsvfiopci driver, the following WARNON trace is seen and probe fails: WARNING: CPU: 0 PID: 5040 at drivers/vfio/vfiomain.c:317...