# CVE-2026-89446

## Summary

- **CVE ID:** CVE-2026-89446
- **Severity:** UNKNOWN
- **CVSS Score:** 1.51
- **CWE:** N/A
- **Published:** Sep 11, 2026
- **Last Modified:** Sep 16, 2026

## 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.

## Affected Products

- Linux — Linux (051ae5aa73d782a8be2699a11e17c68f28b4e758)
- Linux — Linux (6.13)
- Linux — Linux (0)
- Linux — Linux (6.18.50)
- Linux — Linux (7.2.4)
- Linux — Linux (7.3-rc1)

## References

- [CNA](https://git.kernel.org/stable/c/4c33d00ad9a911e87ea222986f732ce072e3aa26)
- [CNA](https://git.kernel.org/stable/c/07b4fe1367f076886c1c47a19c70936138325087)
- [CNA](https://git.kernel.org/stable/c/4ac2ce123824d5f885c868fa1f9f4d463141a2ba)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.20%
- **EPSS Percentile:** 9.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._