---
id: CVE-2023-53482
title: 'iommu: Fix error unwind in iommu_group_alloc()'
summary: |-
  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 kse…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= bc7d12b91bd35477fd650c4d72b61239de9d9066 <
    f119ef452e2d82d912797273cb790a86f1125b3e
  - >-
    Linux >= bc7d12b91bd35477fd650c4d72b61239de9d9066 <
    4c23124b45ee0aa895ed8d5d08871ae6b15ee336
  - >-
    Linux >= bc7d12b91bd35477fd650c4d72b61239de9d9066 <
    8602fa38a63fc689eca29c8c586fac2d8a1f8739
  - >-
    Linux >= bc7d12b91bd35477fd650c4d72b61239de9d9066 <
    4daa861174d56023c2068ddb03de0752f07fa199
  - Linux 4.11
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:22:09.431397Z'
published: '2025-10-01'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:31:11.402Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2023-53482'
references:
  - url: 'https://git.kernel.org/stable/c/f119ef452e2d82d912797273cb790a86f1125b3e'
  - url: 'https://git.kernel.org/stable/c/4c23124b45ee0aa895ed8d5d08871ae6b15ee336'
  - url: 'https://git.kernel.org/stable/c/8602fa38a63fc689eca29c8c586fac2d8a1f8739'
  - url: 'https://git.kernel.org/stable/c/4daa861174d56023c2068ddb03de0752f07fa199'
tags:
  - cve.org
epss: 0.00159
epssPercentile: 0.05053
ingestedAt: '2026-11-05T22:38:31.802Z'
---

## Overview

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

## Affected

- `Linux >= bc7d12b91bd35477fd650c4d72b61239de9d9066 < f119ef452e2d82d912797273cb790a86f1125b3e`
- `Linux >= bc7d12b91bd35477fd650c4d72b61239de9d9066 < 4c23124b45ee0aa895ed8d5d08871ae6b15ee336`
- `Linux >= bc7d12b91bd35477fd650c4d72b61239de9d9066 < 8602fa38a63fc689eca29c8c586fac2d8a1f8739`
- `Linux >= bc7d12b91bd35477fd650c4d72b61239de9d9066 < 4daa861174d56023c2068ddb03de0752f07fa199`
- `Linux 4.11`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.