{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47416", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T14:58:30.818Z", "datePublished": "2024-05-21T15:04:06.042Z", "dateUpdated": "2026-05-11T13:54:16.957Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:54:16.957Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: mdio: fix memory leak\n\nSyzbot reported memory leak in MDIO bus interface, the problem was in\nwrong state logic.\n\nMDIOBUS_ALLOCATED indicates 2 states:\n\t1. Bus is only allocated\n\t2. Bus allocated and __mdiobus_register() fails, but\n\t device_register() was called\n\nIn case of device_register() has been called we should call put_device()\nto correctly free the memory allocated for this device, but mdiobus_free()\ncalls just kfree(dev) in case of MDIOBUS_ALLOCATED state\n\nTo avoid this behaviour we need to set bus->state to MDIOBUS_UNREGISTERED\n_before_ calling device_register(), because put_device() should be\ncalled even in case of device_register() failure." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/phy/mdio_bus.c" ], "versions": [ { "version": "46abc02175b3c246dd5141d878f565a8725060c9", "lessThan": "25e9f88c7e3cc35f5e3d3db199660d28a15df639", "status": "affected", "versionType": "git" }, { "version": "46abc02175b3c246dd5141d878f565a8725060c9", "lessThan": "2250392d930bd0d989f24d355d6355b0150256e7", "status": "affected", "versionType": "git" }, { "version": "46abc02175b3c246dd5141d878f565a8725060c9", "lessThan": "f4f502a04ee1e543825af78f47eb7785015cd9f6", "status": "affected", "versionType": "git" }, { "version": "46abc02175b3c246dd5141d878f565a8725060c9", "lessThan": "2397b9e118721292429fea8807a698e71b94795f", "status": "affected", "versionType": "git" }, { "version": "46abc02175b3c246dd5141d878f565a8725060c9", "lessThan": "414bb4ead1362ef2c8592db723c017258f213988", "status": "affected", "versionType": "git" }, { "version": "46abc02175b3c246dd5141d878f565a8725060c9", "lessThan": "0d2dd40a7be61b89a7c99dae8ee96389d27b413a", "status": "affected", "versionType": "git" }, { "version": "46abc02175b3c246dd5141d878f565a8725060c9", "lessThan": "064c2616234a7394867c924b5c1303974f3a4f4d", "status": "affected", "versionType": "git" }, { "version": "46abc02175b3c246dd5141d878f565a8725060c9", "lessThan": "ca6e11c337daf7925ff8a2aac8e84490a8691905", "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/net/phy/mdio_bus.c" ], "versions": [ { "version": "2.6.28", "status": "affected" }, { "version": "0", "lessThan": "2.6.28", "status": "unaffected", "versionType": "semver" }, { "version": "4.4.289", "lessThanOrEqual": "4.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.287", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.251", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.211", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.153", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.73", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.14.12", "lessThanOrEqual": "5.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "4.4.289" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "4.9.287" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "4.14.251" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "4.19.211" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "5.4.153" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "5.10.73" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "5.14.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "5.15" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/25e9f88c7e3cc35f5e3d3db199660d28a15df639" }, { "url": "https://git.kernel.org/stable/c/2250392d930bd0d989f24d355d6355b0150256e7" }, { "url": "https://git.kernel.org/stable/c/f4f502a04ee1e543825af78f47eb7785015cd9f6" }, { "url": "https://git.kernel.org/stable/c/2397b9e118721292429fea8807a698e71b94795f" }, { "url": "https://git.kernel.org/stable/c/414bb4ead1362ef2c8592db723c017258f213988" }, { "url": "https://git.kernel.org/stable/c/0d2dd40a7be61b89a7c99dae8ee96389d27b413a" }, { "url": "https://git.kernel.org/stable/c/064c2616234a7394867c924b5c1303974f3a4f4d" }, { "url": "https://git.kernel.org/stable/c/ca6e11c337daf7925ff8a2aac8e84490a8691905" } ], "title": "phy: mdio: fix memory leak", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2021-47416", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-05-21T17:32:44.904318Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:15:14.542Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.091Z" }, "title": "CVE Program Container", "references": [ { 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