CVE-2026-45931 Details
Description
In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Hold mm structure across iommu_sva_unbind_device() Some tests trigger a crash in iommu_sva_unbind_device() due to accessing iommu_mm after the associated mm structure has been freed. Fix this by taking an explicit reference to the mm structure after successfully binding the device, and releasing it only after the device is unbound. This ensures the mm remains valid for the entire SVA bind/unbind lifetime.
A vulnerability in the Linux kernel's AMD-XDNA acceleration driver has been addressed. The issue arose in the IOMMU SVA unbinding process, where the driver accessed a memory management structure that had already been freed, leading to a crash. This vulnerability affected the stable versions of the Linux kernel. The problem was resolved by modifying the driver to maintain a valid reference to the memory management structure for the duration of the SVA binding and unbinding process, ensuring stability and preventing crashes.
Users can apply the latest patches available in the Linux kernel stable tree to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/a9162439ad792afcddc04718408ec1380b7a5f63 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f31ccf6278132a35a652fe5eeac3941e1e912398 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f6b4c1d98a7b8040d4d02e89425b3942016a2c2c | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.14, < 6.18.14 >= 6.19, < 6.19.4 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 25, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 30, 2026 | CVE Modified | kernel.org |
| May 27, 2026 | New CVE Received | kernel.org |