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cvelist/2021/47xxx/CVE-2021-47549.json

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"-Synchronized-Data."
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{
"-Synchronized-Data."
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"data_version": "4.0",
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"data_type": "CVE",
"data_format": "MITRE",
"CVE_data_meta": {
"ID": "CVE-2021-47549",
"-Synchronized-Data."
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"ASSIGNER": "cve@kernel.org",
"STATE": "PUBLIC"
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},
"description": {
"description_data": [
{
"lang": "eng",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsata_fsl: fix UAF in sata_fsl_port_stop when rmmod sata_fsl\n\nWhen the `rmmod sata_fsl.ko` command is executed in the PPC64 GNU/Linux,\na bug is reported:\n ==================================================================\n BUG: Unable to handle kernel data access on read at 0x80000800805b502c\n Oops: Kernel access of bad area, sig: 11 [#1]\n NIP [c0000000000388a4] .ioread32+0x4/0x20\n LR [80000000000c6034] .sata_fsl_port_stop+0x44/0xe0 [sata_fsl]\n Call Trace:\n .free_irq+0x1c/0x4e0 (unreliable)\n .ata_host_stop+0x74/0xd0 [libata]\n .release_nodes+0x330/0x3f0\n .device_release_driver_internal+0x178/0x2c0\n .driver_detach+0x64/0xd0\n .bus_remove_driver+0x70/0xf0\n .driver_unregister+0x38/0x80\n .platform_driver_unregister+0x14/0x30\n .fsl_sata_driver_exit+0x18/0xa20 [sata_fsl]\n .__se_sys_delete_module+0x1ec/0x2d0\n .system_call_exception+0xfc/0x1f0\n system_call_common+0xf8/0x200\n ==================================================================\n\nThe triggering of the BUG is shown in the following stack:\n\ndriver_detach\n device_release_driver_internal\n __device_release_driver\n drv->remove(dev) --> platform_drv_remove/platform_remove\n drv->remove(dev) --> sata_fsl_remove\n iounmap(host_priv->hcr_base);\t\t\t<---- unmap\n kfree(host_priv); <---- free\n devres_release_all\n release_nodes\n dr->node.release(dev, dr->data) --> ata_host_stop\n ap->ops->port_stop(ap) --> sata_fsl_port_stop\n ioread32(hcr_base + HCONTROL) <---- UAF\n host->ops->host_stop(host)\n\nThe iounmap(host_priv->hcr_base) and kfree(host_priv) functions should\nnot be executed in drv->remove. These functions should be executed in\nhost_stop after port_stop. Therefore, we move these functions to the\nnew function sata_fsl_host_stop and bind the new function to host_stop."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
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}
]
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},
"affects": {
"vendor": {
"vendor_data": [
{
"vendor_name": "Linux",
"product": {
"product_data": [
{
"product_name": "Linux",
"version": {
"version_data": [
{
"version_affected": "<",
"version_name": "faf0b2e5afe7",
"version_value": "cdcd80292106"
},
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
"versions": [
{
"version": "2.6.24",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.24",
"status": "unaffected",
"-Synchronized-Data."
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"versionType": "semver"
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},
{
"version": "4.4.294",
"lessThanOrEqual": "4.4.*",
"status": "unaffected",
"-Synchronized-Data."
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"versionType": "semver"
"-Synchronized-Data."
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},
{
"version": "4.9.292",
"lessThanOrEqual": "4.9.*",
"status": "unaffected",
"-Synchronized-Data."
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"versionType": "semver"
"-Synchronized-Data."
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},
{
"version": "4.14.257",
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"-Synchronized-Data."
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"versionType": "semver"
"-Synchronized-Data."
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},
{
"version": "4.19.220",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"-Synchronized-Data."
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"versionType": "semver"
"-Synchronized-Data."
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},
{
"version": "5.4.164",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"-Synchronized-Data."
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"versionType": "semver"
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},
{
"version": "5.10.84",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"-Synchronized-Data."
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"versionType": "semver"
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},
{
"version": "5.15.7",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"-Synchronized-Data."
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"versionType": "semver"
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},
{
"version": "5.16",
"lessThanOrEqual": "*",
"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
],
"defaultStatus": "affected"
}
}
]
}
}
]
}
}
]
}
},
"references": {
"reference_data": [
{
"url": "https://git.kernel.org/stable/c/cdcd80292106df5cda325426e96495503e41f947",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/cdcd80292106df5cda325426e96495503e41f947"
},
{
"url": "https://git.kernel.org/stable/c/91ba94d3f7afca195b224f77a72044fbde1389ce",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/91ba94d3f7afca195b224f77a72044fbde1389ce"
},
{
"url": "https://git.kernel.org/stable/c/325ea49fc43cbc03a5e1e37de8f0ca6357ced4b1",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/325ea49fc43cbc03a5e1e37de8f0ca6357ced4b1"
},
{
"url": "https://git.kernel.org/stable/c/0769449b0a5eabc3545337217ae690e46673e73a",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/0769449b0a5eabc3545337217ae690e46673e73a"
},
{
"url": "https://git.kernel.org/stable/c/77393806c76b6b44f1c44bd957788c8bd9152c45",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/77393806c76b6b44f1c44bd957788c8bd9152c45"
},
{
"url": "https://git.kernel.org/stable/c/4a46b2f5dce02539e88a300800812bd24a45e097",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/4a46b2f5dce02539e88a300800812bd24a45e097"
},
{
"url": "https://git.kernel.org/stable/c/adf098e2a8a1e1fc075d6a5ba2edd13cf7189082",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/adf098e2a8a1e1fc075d6a5ba2edd13cf7189082"
},
{
"url": "https://git.kernel.org/stable/c/6c8ad7e8cf29eb55836e7a0215f967746ab2b504",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/6c8ad7e8cf29eb55836e7a0215f967746ab2b504"
}
]
},
"generator": {
"-Synchronized-Data."
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"engine": "bippy-9e1c9544281a"
"-Synchronized-Data."
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}
}
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