CVE-2026-89446
Description
In the Linux kernel, the following vulnerability has been resolved: iommufd: Release current IOAS on xa_store() failure iommufd_take_all_iova_rwsem() takes an object reference and the iova_rwsem write lock before storing the IOAS in the temporary ioas_list xarray. If xa_store() fails, the current IOAS has not been inserted into ioas_list yet. iommufd_release_all_iova_rwsem() only unwinds IOAS objects already present in that xarray, so it cannot release the current IOAS. Release the current IOAS rwsem and object reference before unwinding the previously stored entries.
How to fix
- Linux Linux4c33d00ad9a911e87ea222986f732ce072e3aa26, 07b4fe1367f076886c1c47a19c70936138325087, 4ac2ce123824d5f885c868fa1f9f4d463141a2ba or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 051ae5aa73d782a8be2699a11e17c68f28b4e758 ≤ v < 4c33d00ad9a911e87ea222986f732ce072e3aa26, 051ae5aa73d782a8be2699a11e17c68f28b4e758 ≤ v < 07b4fe1367f076886c1c47a19c70936138325087, 051ae5aa73d782a8be2699a11e17c68f28b4e758 ≤ v < 4ac2ce123824d5f885c868fa1f9f4d463141a2ba, 6.13 | 4c33d00ad9a911e87ea222986f732ce072e3aa26, 07b4fe1367f076886c1c47a19c70936138325087, 4ac2ce123824d5f885c868fa1f9f4d463141a2ba |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.