{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-48961", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-22T01:27:53.628Z", "datePublished": "2024-10-21T20:05:45.849Z", "dateUpdated": "2024-12-19T08:11:25.152Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-19T08:11:25.152Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mdio: fix unbalanced fwnode reference count in mdio_device_release()\n\nThere is warning report about of_node refcount leak\nwhile probing mdio device:\n\nOF: ERROR: memory leak, expected refcount 1 instead of 2,\nof_node_get()/of_node_put() unbalanced - destroy cset entry:\nattach overlay node /spi/soc@0/mdio@710700c0/ethernet@4\n\nIn of_mdiobus_register_device(), we increase fwnode refcount\nby fwnode_handle_get() before associating the of_node with\nmdio device, but it has never been decreased in normal path.\nSince that, in mdio_device_release(), it needs to call\nfwnode_handle_put() in addition instead of calling kfree()\ndirectly.\n\nAfter above, just calling mdio_device_free() in the error handle\npath of of_mdiobus_register_device() is enough to keep the\nrefcount balanced."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/mdio/of_mdio.c", "drivers/net/phy/mdio_device.c"], "versions": [{"version": "a9049e0c513c4521dbfaa302af8ed08b3366b41f", "lessThan": "16854177745a5648f8ec322353b432e18460f43a", "status": "affected", "versionType": "git"}, {"version": "a9049e0c513c4521dbfaa302af8ed08b3366b41f", "lessThan": "a5c6de1a6656b8cc6bce7cb3d9874dd7df4968c3", "status": "affected", "versionType": "git"}, {"version": "a9049e0c513c4521dbfaa302af8ed08b3366b41f", "lessThan": "cb37617687f2bfa5b675df7779f869147c9002bd", "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/mdio/of_mdio.c", "drivers/net/phy/mdio_device.c"], "versions": [{"version": "4.5", "status": "affected"}, {"version": "0", "lessThan": "4.5", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.83", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.13", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/16854177745a5648f8ec322353b432e18460f43a"}, {"url": "https://git.kernel.org/stable/c/a5c6de1a6656b8cc6bce7cb3d9874dd7df4968c3"}, {"url": "https://git.kernel.org/stable/c/cb37617687f2bfa5b675df7779f869147c9002bd"}], "title": "net: mdio: fix unbalanced fwnode reference count in mdio_device_release()", "x_generator": {"engine": "bippy-5f407fcff5a0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2022-48961", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-22T13:20:22.871299Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:28:39.139Z"}}]}}

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{"bugzilla": {"description": "kernel: net: mdio: fix unbalanced fwnode reference count in mdio_device_release()", "id": "2320700", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320700"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: mdio: fix unbalanced fwnode reference count in mdio_device_release()\nThere is warning report about of_node refcount leak\nwhile probing mdio device:\nOF: ERROR: memory leak, expected refcount 1 instead of 2,\nof_node_get()/of_node_put() unbalanced - destroy cset entry:\nattach overlay node /spi/soc@0/mdio@710700c0/ethernet@4\nIn of_mdiobus_register_device(), we increase fwnode refcount\nby fwnode_handle_get() before associating the of_node with\nmdio device, but it has never been decreased in normal path.\nSince that, in mdio_device_release(), it needs to call\nfwnode_handle_put() in addition instead of calling kfree()\ndirectly.\nAfter above, just calling mdio_device_free() in the error handle\npath of of_mdiobus_register_device() is enough to keep the\nrefcount balanced."], "name": "CVE-2022-48961", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-48961\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-48961\nhttps://lore.kernel.org/linux-cve-announce/2024102143-CVE-2022-48961-d44b@gregkh/T"], "threat_severity": "Moderate"}