{"id":"CVE-2021-47325","details":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation\n\nThe reference counting issue happens in several exception handling paths\nof arm_smmu_iova_to_phys_hard(). When those error scenarios occur, the\nfunction forgets to decrease the refcount of \"smmu\" increased by\narm_smmu_rpm_get(), causing a refcount leak.\n\nFix this issue by jumping to \"out\" label when those error scenarios\noccur.","modified":"2026-03-13T05:18:05.990958Z","published":"2024-05-21T15:15:19.613Z","references":[{"type":"FIX","url":"https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb"},{"type":"FIX","url":"https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b"},{"type":"FIX","url":"https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554"},{"type":"FIX","url":"https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0"},{"type":"FIX","url":"https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"5.4.134"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.52"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.12.19"}]},{"events":[{"introduced":"5.13"},{"fixed":"5.13.4"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47325.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}