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vuln-cve/data/2022/48xxx/CVE-2022-48817.json
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{
"dataType": "CVE_RECORD",
"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"
},
"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."
}
],
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"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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"status": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/dsa/qca/ar9331.c"
],
"versions": [
{
"version": "5.9",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.9",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.101",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
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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",
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{
"version": "5.17",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
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"operator": "OR",
"negate": false,
"cpeMatch": [
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"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "5.15.24"
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"vulnerable": true,
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"references": [
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"url": "https://git.kernel.org/stable/c/475ce5dcf2d88fd4f3c213a0ac944e3e40702970"
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"url": "https://git.kernel.org/stable/c/aae1c6a1d3d696fc33b609fb12fe744a556d1dc5"
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"url": "https://git.kernel.org/stable/c/f1842a8cb71de4d7eb75a86f76e88c7ee739218c"
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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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"id": "CVE-2022-48817",
"role": "CISA Coordinator",
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"version": "2.0.3",
"timestamp": "2024-09-10T16:58:12.493038Z"
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