{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2021-47327", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T14:28:16.975Z", "datePublished": "2024-05-21T14:35:39.816Z", "dateUpdated": "2024-08-04T05:32:08.559Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:06:02.230Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/arm-smmu: Fix arm_smmu_device refcount leak when arm_smmu_rpm_get fails\n\narm_smmu_rpm_get() invokes pm_runtime_get_sync(), which increases the\nrefcount of the \"smmu\" even though the return value is less than 0.\n\nThe reference counting issue happens in some error handling paths of\narm_smmu_rpm_get() in its caller functions. When arm_smmu_rpm_get()\nfails, the caller functions forget to decrease the refcount of \"smmu\"\nincreased by arm_smmu_rpm_get(), causing a refcount leak.\n\nFix this issue by calling pm_runtime_resume_and_get() instead of\npm_runtime_get_sync() in arm_smmu_rpm_get(), which can keep the refcount\nbalanced in case of failure." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/iommu/arm/arm-smmu/arm-smmu.c" ], "versions": [ { "version": "1da177e4c3f4", "lessThan": "3761ae0d0e54", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f4", "lessThan": "c4007596fbda", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f4", "lessThan": "fbf4daa6f410", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f4", "lessThan": "fe92c0581990", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f4", "lessThan": "1adf30f198c2", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/iommu/arm/arm-smmu/arm-smmu.c" ], "versions": [ { "version": "5.4.134", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.52", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.12.19", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.13.4", "lessThanOrEqual": "5.13.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.14", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/3761ae0d0e549f2acdaf11f49df4ed06d256b20f" }, { "url": "https://git.kernel.org/stable/c/c4007596fbdabc29f858dc2e1990858a146b60b2" }, { "url": "https://git.kernel.org/stable/c/fbf4daa6f4105e01fbd3868006f65c163365c1e3" }, { "url": "https://git.kernel.org/stable/c/fe92c058199067ae90cf2a901ddf3c271893557a" }, { "url": "https://git.kernel.org/stable/c/1adf30f198c26539a62d761e45af72cde570413d" } ], "title": "iommu/arm-smmu: Fix arm_smmu_device refcount leak when arm_smmu_rpm_get fails", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-911", "lang": "en", "description": "CWE-911 Improper Update of Reference Count" } ] } ], "affected": [ { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "1da177e4c3f4", "status": "affected", "lessThan": "3761ae0d0e54", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "1da177e4c3f4", "status": "affected", "lessThan": "c4007596fbda", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "1da177e4c3f4", "status": "affected", "lessThan": "fbf4daa6f410", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "1da177e4c3f4", "status": "affected", "lessThan": "fe92c0581990", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "1da177e4c3f4", "status": "affected", "lessThan": "1adf30f198c2", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "5.4.134", "status": "unaffected", "lessThanOrEqual": "5.5", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "5.10.52", "status": "unaffected", "lessThanOrEqual": "5.11", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "5.12.19", "status": "unaffected", "lessThanOrEqual": "5.13", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "5.13.4", "status": "unaffected", "lessThanOrEqual": "5.14", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "5.14", "status": "unaffected" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-06T15:58:26.406963Z", "id": "CVE-2021-47327", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-06T16:10:25.404Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.559Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/3761ae0d0e549f2acdaf11f49df4ed06d256b20f", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/c4007596fbdabc29f858dc2e1990858a146b60b2", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/fbf4daa6f4105e01fbd3868006f65c163365c1e3", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/fe92c058199067ae90cf2a901ddf3c271893557a", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/1adf30f198c26539a62d761e45af72cde570413d", "tags": [ "x_transferred" ] } ] } ] } }