| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "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." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/ata/sata_fsl.c" |
| ], |
| "versions": [ |
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| "lessThan": "cdcd80292106df5cda325426e96495503e41f947", |
| "status": "affected", |
| "versionType": "git" |
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| "lessThan": "91ba94d3f7afca195b224f77a72044fbde1389ce", |
| "status": "affected", |
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| "lessThan": "325ea49fc43cbc03a5e1e37de8f0ca6357ced4b1", |
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| "version": "faf0b2e5afe7dae072d2715763c7f992b612b628", |
| "lessThan": "4a46b2f5dce02539e88a300800812bd24a45e097", |
| "status": "affected", |
| "versionType": "git" |
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| "version": "faf0b2e5afe7dae072d2715763c7f992b612b628", |
| "lessThan": "adf098e2a8a1e1fc075d6a5ba2edd13cf7189082", |
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| "lessThan": "6c8ad7e8cf29eb55836e7a0215f967746ab2b504", |
| "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/ata/sata_fsl.c" |
| ], |
| "versions": [ |
| { |
| "version": "2.6.24", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "2.6.24", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.4.294", |
| "lessThanOrEqual": "4.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.9.292", |
| "lessThanOrEqual": "4.9.*", |
| "status": "unaffected", |
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| }, |
| { |
| "version": "4.14.257", |
| "lessThanOrEqual": "4.14.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.19.220", |
| "lessThanOrEqual": "4.19.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.164", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.84", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.7", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.16", |
| "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:*:*:*:*:*:*:*:*", |
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| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/cdcd80292106df5cda325426e96495503e41f947" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/91ba94d3f7afca195b224f77a72044fbde1389ce" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/325ea49fc43cbc03a5e1e37de8f0ca6357ced4b1" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/0769449b0a5eabc3545337217ae690e46673e73a" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/77393806c76b6b44f1c44bd957788c8bd9152c45" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/4a46b2f5dce02539e88a300800812bd24a45e097" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/adf098e2a8a1e1fc075d6a5ba2edd13cf7189082" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/6c8ad7e8cf29eb55836e7a0215f967746ab2b504" |
| } |
| ], |
| "title": "sata_fsl: fix UAF in sata_fsl_port_stop when rmmod sata_fsl", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2021-47549", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
