CVE-2021-47325

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492	Patch
https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb	Patch
https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b	Patch
https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554	Patch
https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0	Patch
https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492	Patch
https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb	Patch
https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b	Patch
https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554	Patch
https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-05-21 15:15

Updated : 2025-01-13 20:04

NVD link : CVE-2021-47325

Mitre link : CVE-2021-47325

CVE.ORG link : CVE-2021-47325

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-Other

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