{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix deadlock between sd_remove & sd_release\n\nOur test report the following hung task:\n\n[ 2538.459400] INFO: task \"kworker/0:0\":7 blocked for more than 188 seconds.\n[ 2538.459427] Call trace:\n[ 2538.459430]  __switch_to+0x174/0x338\n[ 2538.459436]  __schedule+0x628/0x9c4\n[ 2538.459442]  schedule+0x7c/0xe8\n[ 2538.459447]  schedule_preempt_disabled+0x24/0x40\n[ 2538.459453]  __mutex_lock+0x3ec/0xf04\n[ 2538.459456]  __mutex_lock_slowpath+0x14/0x24\n[ 2538.459459]  mutex_lock+0x30/0xd8\n[ 2538.459462]  del_gendisk+0xdc/0x350\n[ 2538.459466]  sd_remove+0x30/0x60\n[ 2538.459470]  device_release_driver_internal+0x1c4/0x2c4\n[ 2538.459474]  device_release_driver+0x18/0x28\n[ 2538.459478]  bus_remove_device+0x15c/0x174\n[ 2538.459483]  device_del+0x1d0/0x358\n[ 2538.459488]  __scsi_remove_device+0xa8/0x198\n[ 2538.459493]  scsi_forget_host+0x50/0x70\n[ 2538.459497]  scsi_remove_host+0x80/0x180\n[ 2538.459502]  usb_stor_disconnect+0x68/0xf4\n[ 2538.459506]  usb_unbind_interface+0xd4/0x280\n[ 2538.459510]  device_release_driver_internal+0x1c4/0x2c4\n[ 2538.459514]  device_release_driver+0x18/0x28\n[ 2538.459518]  bus_remove_device+0x15c/0x174\n[ 2538.459523]  device_del+0x1d0/0x358\n[ 2538.459528]  usb_disable_device+0x84/0x194\n[ 2538.459532]  usb_disconnect+0xec/0x300\n[ 2538.459537]  hub_event+0xb80/0x1870\n[ 2538.459541]  process_scheduled_works+0x248/0x4dc\n[ 2538.459545]  worker_thread+0x244/0x334\n[ 2538.459549]  kthread+0x114/0x1bc\n\n[ 2538.461001] INFO: task \"fsck.\":15415 blocked for more than 188 seconds.\n[ 2538.461014] Call trace:\n[ 2538.461016]  __switch_to+0x174/0x338\n[ 2538.461021]  __schedule+0x628/0x9c4\n[ 2538.461025]  schedule+0x7c/0xe8\n[ 2538.461030]  blk_queue_enter+0xc4/0x160\n[ 2538.461034]  blk_mq_alloc_request+0x120/0x1d4\n[ 2538.461037]  scsi_execute_cmd+0x7c/0x23c\n[ 2538.461040]  ioctl_internal_command+0x5c/0x164\n[ 2538.461046]  scsi_set_medium_removal+0x5c/0xb0\n[ 2538.461051]  sd_release+0x50/0x94\n[ 2538.461054]  blkdev_put+0x190/0x28c\n[ 2538.461058]  blkdev_release+0x28/0x40\n[ 2538.461063]  __fput+0xf8/0x2a8\n[ 2538.461066]  __fput_sync+0x28/0x5c\n[ 2538.461070]  __arm64_sys_close+0x84/0xe8\n[ 2538.461073]  invoke_syscall+0x58/0x114\n[ 2538.461078]  el0_svc_common+0xac/0xe0\n[ 2538.461082]  do_el0_svc+0x1c/0x28\n[ 2538.461087]  el0_svc+0x38/0x68\n[ 2538.461090]  el0t_64_sync_handler+0x68/0xbc\n[ 2538.461093]  el0t_64_sync+0x1a8/0x1ac\n\n  T1:\t\t\t\tT2:\n  sd_remove\n  del_gendisk\n  __blk_mark_disk_dead\n  blk_freeze_queue_start\n  ++q->mq_freeze_depth\n  \t\t\t\tbdev_release\n \t\t\t\tmutex_lock(&disk->open_mutex)\n  \t\t\t\tsd_release\n \t\t\t\tscsi_execute_cmd\n \t\t\t\tblk_queue_enter\n \t\t\t\twait_event(!q->mq_freeze_depth)\n  mutex_lock(&disk->open_mutex)\n\nSCSI does not set GD_OWNS_QUEUE, so QUEUE_FLAG_DYING is not set in\nthis scenario. This is a classic ABBA deadlock. To fix the deadlock,\nmake sure we don't try to acquire disk->open_mutex after freezing\nthe queue."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "block/genhd.c"
               ],
               "versions": [
                  {
                     "version": "eec1be4c30df",
                     "lessThan": "5a5625a83eac",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "eec1be4c30df",
                     "lessThan": "f5418f48a93b",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "eec1be4c30df",
                     "lessThan": "7e04da2dc701",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "block/genhd.c"
               ],
               "versions": [
                  {
                     "version": "6.5",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.5",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.44",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10.3",
                     "lessThanOrEqual": "6.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.11",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/5a5625a83eac91fdff1d5f0202ecfc45a31983c9"
            },
            {
               "url": "https://git.kernel.org/stable/c/f5418f48a93b69ed9e6a2281eee06b412f14a544"
            },
            {
               "url": "https://git.kernel.org/stable/c/7e04da2dc7013af50ed3a2beb698d5168d1e594b"
            }
         ],
         "title": "block: fix deadlock between sd_remove & sd_release",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-42294",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}