Vulnerability-Lookup

GHSA-4Q4J-HM78-5VMP

Vulnerability from github – Published: 2024-05-21 15:31 – Updated: 2025-01-13 21:30

Details

In the Linux kernel, the following vulnerability has been resolved:

iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation

The reference counting issue happens in several exception handling paths of arm_smmu_iova_to_phys_hard(). When those error scenarios occur, the function forgets to decrease the refcount of "smmu" increased by arm_smmu_rpm_get(), causing a refcount leak.

Fix this issue by jumping to "out" label when those error scenarios occur.

Severity ?

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47325"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:19Z",
    "severity": "MODERATE"
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  "id": "GHSA-4q4j-hm78-5vmp",
  "modified": "2025-01-13T21:30:47Z",
  "published": "2024-05-21T15:31:43Z",
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CVE-2021-47325 (GCVE-0-2021-47325)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:35 – Updated: 2025-12-18 11:36

Title

iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation

Summary

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation The reference counting issue happens in several exception handling paths of arm_smmu_iova_to_phys_hard(). When those error scenarios occur, the function forgets to decrease the refcount of "smmu" increased by arm_smmu_rpm_get(), causing a refcount leak. Fix this issue by jumping to "out" label when those error scenarios occur.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/b11220803ad14a2a8…
	https://git.kernel.org/stable/c/43d1aaa1965f9b580…
	https://git.kernel.org/stable/c/0f0c5ea09139777d9…
	https://git.kernel.org/stable/c/5f9741a9a91f25c89…
	https://git.kernel.org/stable/c/7c8f176d6a3fa18aa…

Impacted products

Vendor

Product

Version

Linux

Affected: d4a44f0750bb9bf7c44c22444a482756b2344a79 , < b11220803ad14a2a880cc06d8e01fe2548cc85b0 (git)
Affected: d4a44f0750bb9bf7c44c22444a482756b2344a79 , < 43d1aaa1965f9b58035196dac49b1e1e6c9c25eb (git)
Affected: d4a44f0750bb9bf7c44c22444a482756b2344a79 , < 0f0c5ea09139777d90729d408b807021f2ea6492 (git)
Affected: d4a44f0750bb9bf7c44c22444a482756b2344a79 , < 5f9741a9a91f25c89e04b408cd61e3ab050ce24b (git)
Affected: d4a44f0750bb9bf7c44c22444a482756b2344a79 , < 7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554 (git)

Linux

Affected: 5.0
Unaffected: 0 , < 5.0 (semver)
Unaffected: 5.4.134 , ≤ 5.4.* (semver)
Unaffected: 5.10.52 , ≤ 5.10.* (semver)
Unaffected: 5.12.19 , ≤ 5.12.* (semver)
Unaffected: 5.13.4 , ≤ 5.13.* (semver)
Unaffected: 5.14 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-4Q4J-HM78-5VMP

CVE-2021-47325 (GCVE-0-2021-47325)

Tags

Sightings

Nomenclature