CVE-2026-80687
- Source
- https://cve.org/CVERecord?id=CVE-2026-80687
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80687.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-80687
- Downstream
- Published
- 2026-08-28T06:52:52Z
- Modified
- 2026-08-30T03:48:21Z
- Summary
- iommufd/viommu: Release the igroup lock on the vdevice_size error path
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80687.json" }- References
-
- https://git.kernel.org/stable/c/294b464b2be7e57872864cb6936e1d9c7294f89d
- https://git.kernel.org/stable/c/339bd11591593ab7ce88136ab7fd01ef3813b724
- https://git.kernel.org/stable/c/ca9e49e1c8931a4e6e743a1f1d2e7f977f774b86
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80687.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-80687
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git