CVE-2021-47325
Published: May 21, 2024
Modified: May 11, 2026
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected d4a44f0750bb9bf7c44c22444a482756b2344a79 - < b11220803ad14a2a880cc06d8e01fe2548cc85b0affected d4a44f0750bb9bf7c44c22444a482756b2344a79 - < 43d1aaa1965f9b58035196dac49b1e1e6c9c25ebaffected d4a44f0750bb9bf7c44c22444a482756b2344a79 - < 0f0c5ea09139777d90729d408b807021f2ea6492affected d4a44f0750bb9bf7c44c22444a482756b2344a79 - < 5f9741a9a91f25c89e04b408cd61e3ab050ce24baffected d4a44f0750bb9bf7c44c22444a482756b2344a79 - < 7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554 |
Linux | Linux | affected 5.0unaffected 0 - < 5.0unaffected 5.4.134 - <= 5.4.*unaffected 5.10.52 - <= 5.10.*unaffected 5.12.19 - <= 5.12.*+2 more versions |
References
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