{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: Don't ignore suspended array in md_check_recovery()\n\nmddev_suspend() never stop sync_thread, hence it doesn't make sense to\nignore suspended array in md_check_recovery(), which might cause\nsync_thread can't be unregistered.\n\nAfter commit f52f5c71f3d4 (\"md: fix stopping sync thread\"), following\nhang can be triggered by test shell/integrity-caching.sh:\n\n1) suspend the array:\nraid_postsuspend\n mddev_suspend\n\n2) stop the array:\nraid_dtr\n md_stop\n  __md_stop_writes\n   stop_sync_thread\n    set_bit(MD_RECOVERY_INTR, &mddev->recovery);\n    md_wakeup_thread_directly(mddev->sync_thread);\n    wait_event(..., !test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))\n\n3) sync thread done:\nmd_do_sync\n set_bit(MD_RECOVERY_DONE, &mddev->recovery);\n md_wakeup_thread(mddev->thread);\n\n4) daemon thread can't unregister sync thread:\nmd_check_recovery\n if (mddev->suspended)\n   return; -> return directly\n md_read_sync_thread\n clear_bit(MD_RECOVERY_RUNNING, &mddev->recovery);\n -> MD_RECOVERY_RUNNING can't be cleared, hence step 2 hang;\n\nThis problem is not just related to dm-raid, fix it by ignoring\nsuspended array in md_check_recovery(). And follow up patches will\nimprove dm-raid better to frozen sync thread during suspend."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/md/md.c"
               ],
               "versions": [
                  {
                     "version": "68866e425be2",
                     "lessThan": "a55f0d6179a1",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "68866e425be2",
                     "lessThan": "1baae052cccd",
                     "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/md/md.c"
               ],
               "versions": [
                  {
                     "version": "3.0",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "3.0",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.7",
                     "lessThanOrEqual": "6.7.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/a55f0d6179a19c6b982e2dc344d58c98647a3be0"
            },
            {
               "url": "https://git.kernel.org/stable/c/1baae052cccd08daf9a9d64c3f959d8cdb689757"
            }
         ],
         "title": "md: Don't ignore suspended array in md_check_recovery()",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-26758",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}