CVE-2022-48724 - CVE House
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Status published Medium CVE-2022-48724

iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping()

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping() After commit e3beca48a45b ("irqdomain/treewide: Keep firmware node unconditionally allocated"). For tear down scenario, fn is only freed after fail to allocate ir_domain, though it also should be freed in case dmar_enable_qi returns error. Besides free fn, irq_domain and ir_msi_domain need to be removed as well if intel_setup_irq_remapping fails to enable queued invalidation. Improve the rewinding path by add out_free_ir_domain and out_free_fwnode lables per Baolu's suggestion.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
03992c88d71ba79d956f2ed54e370e630b8750f4, c0c489e5430530a7021f4c889cd5931597e4b200, 36f7355545725c5e9400520ae33e6ee16cf78c0e, e3beca48a45b5e0e6e6a4e0124276b8248dcc9bb, b4198ecddb87cd955aa9e024dd656af5ceaf6196, 4.14.190, 4.19.135, 5.4.54, 5.7.11, 5.8, 0, 4.14.265, 4.19.228, 5.4.178, 5.10.99, 5.15.22, 5.16.8, 5.17

Timeline

Official Publish: June 20th, 2024
Last Modified: May 23rd, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.