Bug 2400768 (CVE-2023-53482)

Summary: CVE-2023-53482 kernel: iommu: Fix error unwind in iommu_group_alloc()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-10-01 12:06:19 UTC 
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
Comment 1 Jon Moroney 2025-10-01 20:16:06 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100113-CVE-2023-53482-ade3@gregkh/T