{
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    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-48817",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-07-16T11:38:08.900Z",
        "datePublished": "2024-07-16T11:44:05.291Z",
        "dateUpdated": "2026-05-11T18:47:42.656Z"
    },
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                "dateUpdated": "2026-05-11T18:47:42.656Z"
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: ar9331: register the mdiobus under devres\n\nAs explained in commits:\n74b6d7d13307 (\"net: dsa: realtek: register the MDIO bus under devres\")\n5135e96a3dd2 (\"net: dsa: don't allocate the slave_mii_bus using devres\")\n\nmdiobus_free() will panic when called from devm_mdiobus_free() <-\ndevres_release_all() <- __device_release_driver(), and that mdiobus was\nnot previously unregistered.\n\nThe ar9331 is an MDIO device, so the initial set of constraints that I\nthought would cause this (I2C or SPI buses which call ->remove on\n->shutdown) do not apply. But there is one more which applies here.\n\nIf the DSA master itself is on a bus that calls ->remove from ->shutdown\n(like dpaa2-eth, which is on the fsl-mc bus), there is a device link\nbetween the switch and the DSA master, and device_links_unbind_consumers()\nwill unbind the ar9331 switch driver on shutdown.\n\nSo the same treatment must be applied to all DSA switch drivers, which\nis: either use devres for both the mdiobus allocation and registration,\nor don't use devres at all.\n\nThe ar9331 driver doesn't have a complex code structure for mdiobus\nremoval, so just replace of_mdiobus_register with the devres variant in\norder to be all-devres and ensure that we don't free a still-registered\nbus."
                }
            ],
            "affected": [
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                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/dsa/qca/ar9331.c"
                    ],
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                            "status": "affected",
                            "versionType": "git"
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                            "lessThan": "aae1c6a1d3d696fc33b609fb12fe744a556d1dc5",
                            "status": "affected",
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                            "lessThan": "f1842a8cb71de4d7eb75a86f76e88c7ee739218c",
                            "status": "affected",
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                            "lessThan": "50facd86e9fbc4b93fe02e5fe05776047f45dbfb",
                            "status": "affected",
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                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/dsa/qca/ar9331.c"
                    ],
                    "versions": [
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                            "version": "5.9",
                            "status": "affected"
                        },
                        {
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                            "lessThan": "5.9",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
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                            "lessThanOrEqual": "5.10.*",
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                            "version": "5.15.24",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
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                        {
                            "version": "5.16.10",
                            "lessThanOrEqual": "5.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.17",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
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                    "url": "https://git.kernel.org/stable/c/50facd86e9fbc4b93fe02e5fe05776047f45dbfb"
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            "title": "net: dsa: ar9331: register the mdiobus under devres",
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