{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2021-47549", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-24T15:02:54.831Z", "datePublished": "2024-05-24T15:09:53.292Z", "dateUpdated": "2024-08-04T05:39:59.798Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:09:53.285Z" }, "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": [ { "version": "faf0b2e5afe7", "lessThan": "cdcd80292106", "status": "affected", "versionType": "git" }, { "version": "faf0b2e5afe7", "lessThan": "91ba94d3f7af", "status": "affected", "versionType": "git" }, { "version": "faf0b2e5afe7", "lessThan": "325ea49fc43c", "status": "affected", "versionType": "git" }, { "version": "faf0b2e5afe7", "lessThan": "0769449b0a5e", "status": "affected", "versionType": "git" }, { "version": "faf0b2e5afe7", "lessThan": "77393806c76b", "status": "affected", "versionType": "git" }, { "version": "faf0b2e5afe7", "lessThan": "4a46b2f5dce0", "status": "affected", "versionType": "git" }, { "version": "faf0b2e5afe7", "lessThan": "adf098e2a8a1", "status": "affected", "versionType": "git" }, { "version": "faf0b2e5afe7", "lessThan": "6c8ad7e8cf29", "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": "custom" }, { "version": "4.4.294", "lessThanOrEqual": "4.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "4.9.292", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "custom" }, { "version": "4.14.257", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.220", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.164", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.84", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.7", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.16", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "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-a5840b7849dd" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-10T18:51:57.611443Z", "id": "CVE-2021-47549", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-10T18:52:23.946Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.798Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/cdcd80292106df5cda325426e96495503e41f947", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/91ba94d3f7afca195b224f77a72044fbde1389ce", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/325ea49fc43cbc03a5e1e37de8f0ca6357ced4b1", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/0769449b0a5eabc3545337217ae690e46673e73a", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/77393806c76b6b44f1c44bd957788c8bd9152c45", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/4a46b2f5dce02539e88a300800812bd24a45e097", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/adf098e2a8a1e1fc075d6a5ba2edd13cf7189082", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/6c8ad7e8cf29eb55836e7a0215f967746ab2b504", "tags": [ "x_transferred" ] } ] } ] } }