BaseFortify

Publication date: 2025-10-01

Last updated on: 2025-10-02

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: iommu: Fix error unwind in iommu_group_alloc() If either iommu_group_grate_file() fails then the iommu_group is leaked. Destroy it on these error paths. Found by kselftest/iommu/iommufd_fail_nth

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-10-01

Last Modified

2025-10-02

Generated

2026-07-06

AI Q&A

2025-10-01

EPSS Evaluated

2026-07-05

NVD

CVE-2023-53482

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is in the Linux kernel's iommu component. Specifically, there is an error in the error handling code of the function iommu_group_alloc(). If the function iommu_group_grate_file() fails, the iommu_group resource is leaked because it is not properly destroyed on these error paths. This means that memory or resources allocated for iommu_group are not freed when an error occurs, potentially leading to resource leaks.

Impact Analysis

The impact of this vulnerability is that it can cause resource leaks in the Linux kernel's iommu subsystem. Resource leaks can degrade system performance over time, potentially leading to system instability or crashes if resources are exhausted. However, there is no indication of direct exploitation such as privilege escalation or data corruption from this vulnerability.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version where the iommu_group_alloc() error unwind issue has been fixed. This ensures that iommu_group leaks on error paths are properly handled.

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