CVE-2026-80687
Last modified
CVE-2026-80687 is a vulnerability of currently unknown severity. 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..
Description
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.
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= ed42eee797ff3dc889ade63c1dd7c4f430699e23, < 294b464b2be7e57872864cb6936e1d9c7294f89d; >= ed42eee797ff3dc889ade63c1dd7c4f430699e23, < ca9e49e1c8931a4e6e743a1f1d2e7f977f774b86; >= ed42eee797ff3dc889ade63c1dd7c4f430699e23, < 339bd11591593ab7ce88136ab7fd01ef3813b724 |
| Linux | Linux | 6.17 |
References
Timeline
- Published
- Last Modified
- Status
- Received
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