CVE-2026-80687

In the Linux kernel, the following vulnerability has been resolved: iommufd/viommu: Release the igroup lock on the vdevice_size error path iommufd_vdevice_alloc_ioctl() takes idev->igroup->lock, then validates the driver's vdevice_size against the core structure size with a WARN_ON_ONCE. On failure that guard jumps to out_put_idev, below out_unlock_igroup, so it skips the mutex_unlock(), leaving the igroup lock held and deadlocking the next vDEVICE operation on that group. Jump to out_unlock_igroup instead.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/294b464b2be7e57872864cb6936e1d9c7294f89d
https://git.kernel.org/stable/c/339bd11591593ab7ce88136ab7fd01ef3813b724
https://git.kernel.org/stable/c/ca9e49e1c8931a4e6e743a1f1d2e7f977f774b86

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-28 08:16

Updated : 2026-08-28 08:16

NVD link : CVE-2026-80687

Mitre link : CVE-2026-80687

CVE.ORG link : CVE-2026-80687

JSON object : View

Products Affected

No product.

CWE

No CWE.

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