gsd-2024-26756
Vulnerability from gsd
Modified
2024-02-20 06:02
Details
In the Linux kernel, the following vulnerability has been resolved: md: Don't register sync_thread for reshape directly Currently, if reshape is interrupted, then reassemble the array will register sync_thread directly from pers->run(), in this case 'MD_RECOVERY_RUNNING' is set directly, however, there is no guarantee that md_do_sync() will be executed, hence stop_sync_thread() will hang because 'MD_RECOVERY_RUNNING' can't be cleared. Last patch make sure that md_do_sync() will set MD_RECOVERY_DONE, however, following hang can still be triggered by dm-raid test shell/lvconvert-raid-reshape.sh occasionally: [root@fedora ~]# cat /proc/1982/stack [<0>] stop_sync_thread+0x1ab/0x270 [md_mod] [<0>] md_frozen_sync_thread+0x5c/0xa0 [md_mod] [<0>] raid_presuspend+0x1e/0x70 [dm_raid] [<0>] dm_table_presuspend_targets+0x40/0xb0 [dm_mod] [<0>] __dm_destroy+0x2a5/0x310 [dm_mod] [<0>] dm_destroy+0x16/0x30 [dm_mod] [<0>] dev_remove+0x165/0x290 [dm_mod] [<0>] ctl_ioctl+0x4bb/0x7b0 [dm_mod] [<0>] dm_ctl_ioctl+0x11/0x20 [dm_mod] [<0>] vfs_ioctl+0x21/0x60 [<0>] __x64_sys_ioctl+0xb9/0xe0 [<0>] do_syscall_64+0xc6/0x230 [<0>] entry_SYSCALL_64_after_hwframe+0x6c/0x74 Meanwhile mddev->recovery is: MD_RECOVERY_RUNNING | MD_RECOVERY_INTR | MD_RECOVERY_RESHAPE | MD_RECOVERY_FROZEN Fix this problem by remove the code to register sync_thread directly from raid10 and raid5. And let md_check_recovery() to register sync_thread.
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{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2024-26756"
      ],
      "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: Don\u0027t register sync_thread for reshape directly\n\nCurrently, if reshape is interrupted, then reassemble the array will\nregister sync_thread directly from pers-\u003erun(), in this case\n\u0027MD_RECOVERY_RUNNING\u0027 is set directly, however, there is no guarantee\nthat md_do_sync() will be executed, hence stop_sync_thread() will hang\nbecause \u0027MD_RECOVERY_RUNNING\u0027 can\u0027t be cleared.\n\nLast patch make sure that md_do_sync() will set MD_RECOVERY_DONE,\nhowever, following hang can still be triggered by dm-raid test\nshell/lvconvert-raid-reshape.sh occasionally:\n\n[root@fedora ~]# cat /proc/1982/stack\n[\u003c0\u003e] stop_sync_thread+0x1ab/0x270 [md_mod]\n[\u003c0\u003e] md_frozen_sync_thread+0x5c/0xa0 [md_mod]\n[\u003c0\u003e] raid_presuspend+0x1e/0x70 [dm_raid]\n[\u003c0\u003e] dm_table_presuspend_targets+0x40/0xb0 [dm_mod]\n[\u003c0\u003e] __dm_destroy+0x2a5/0x310 [dm_mod]\n[\u003c0\u003e] dm_destroy+0x16/0x30 [dm_mod]\n[\u003c0\u003e] dev_remove+0x165/0x290 [dm_mod]\n[\u003c0\u003e] ctl_ioctl+0x4bb/0x7b0 [dm_mod]\n[\u003c0\u003e] dm_ctl_ioctl+0x11/0x20 [dm_mod]\n[\u003c0\u003e] vfs_ioctl+0x21/0x60\n[\u003c0\u003e] __x64_sys_ioctl+0xb9/0xe0\n[\u003c0\u003e] do_syscall_64+0xc6/0x230\n[\u003c0\u003e] entry_SYSCALL_64_after_hwframe+0x6c/0x74\n\nMeanwhile mddev-\u003erecovery is:\nMD_RECOVERY_RUNNING |\nMD_RECOVERY_INTR |\nMD_RECOVERY_RESHAPE |\nMD_RECOVERY_FROZEN\n\nFix this problem by remove the code to register sync_thread directly\nfrom raid10 and raid5. And let md_check_recovery() to register\nsync_thread.",
      "id": "GSD-2024-26756",
      "modified": "2024-02-20T06:02:29.211286Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2024-26756",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "f67055780caa",
                          "version_value": "13b520fb62b7"
                        },
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "affected",
                            "versions": [
                              {
                                "status": "affected",
                                "version": "2.6.17"
                              },
                              {
                                "lessThan": "2.6.17",
                                "status": "unaffected",
                                "version": "0",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "6.7.*",
                                "status": "unaffected",
                                "version": "6.7.7",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "*",
                                "status": "unaffected",
                                "version": "6.8",
                                "versionType": "original_commit_for_fix"
                              }
                            ]
                          }
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Linux"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: Don\u0027t register sync_thread for reshape directly\n\nCurrently, if reshape is interrupted, then reassemble the array will\nregister sync_thread directly from pers-\u003erun(), in this case\n\u0027MD_RECOVERY_RUNNING\u0027 is set directly, however, there is no guarantee\nthat md_do_sync() will be executed, hence stop_sync_thread() will hang\nbecause \u0027MD_RECOVERY_RUNNING\u0027 can\u0027t be cleared.\n\nLast patch make sure that md_do_sync() will set MD_RECOVERY_DONE,\nhowever, following hang can still be triggered by dm-raid test\nshell/lvconvert-raid-reshape.sh occasionally:\n\n[root@fedora ~]# cat /proc/1982/stack\n[\u003c0\u003e] stop_sync_thread+0x1ab/0x270 [md_mod]\n[\u003c0\u003e] md_frozen_sync_thread+0x5c/0xa0 [md_mod]\n[\u003c0\u003e] raid_presuspend+0x1e/0x70 [dm_raid]\n[\u003c0\u003e] dm_table_presuspend_targets+0x40/0xb0 [dm_mod]\n[\u003c0\u003e] __dm_destroy+0x2a5/0x310 [dm_mod]\n[\u003c0\u003e] dm_destroy+0x16/0x30 [dm_mod]\n[\u003c0\u003e] dev_remove+0x165/0x290 [dm_mod]\n[\u003c0\u003e] ctl_ioctl+0x4bb/0x7b0 [dm_mod]\n[\u003c0\u003e] dm_ctl_ioctl+0x11/0x20 [dm_mod]\n[\u003c0\u003e] vfs_ioctl+0x21/0x60\n[\u003c0\u003e] __x64_sys_ioctl+0xb9/0xe0\n[\u003c0\u003e] do_syscall_64+0xc6/0x230\n[\u003c0\u003e] entry_SYSCALL_64_after_hwframe+0x6c/0x74\n\nMeanwhile mddev-\u003erecovery is:\nMD_RECOVERY_RUNNING |\nMD_RECOVERY_INTR |\nMD_RECOVERY_RESHAPE |\nMD_RECOVERY_FROZEN\n\nFix this problem by remove the code to register sync_thread directly\nfrom raid10 and raid5. And let md_check_recovery() to register\nsync_thread."
          }
        ]
      },
      "generator": {
        "engine": "bippy-5f0117140d9a"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://git.kernel.org/stable/c/13b520fb62b772e408f9b79c5fe18ad414e90417",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/13b520fb62b772e408f9b79c5fe18ad414e90417"
          },
          {
            "name": "https://git.kernel.org/stable/c/ad39c08186f8a0f221337985036ba86731d6aafe",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/ad39c08186f8a0f221337985036ba86731d6aafe"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: Don\u0027t register sync_thread for reshape directly\n\nCurrently, if reshape is interrupted, then reassemble the array will\nregister sync_thread directly from pers-\u003erun(), in this case\n\u0027MD_RECOVERY_RUNNING\u0027 is set directly, however, there is no guarantee\nthat md_do_sync() will be executed, hence stop_sync_thread() will hang\nbecause \u0027MD_RECOVERY_RUNNING\u0027 can\u0027t be cleared.\n\nLast patch make sure that md_do_sync() will set MD_RECOVERY_DONE,\nhowever, following hang can still be triggered by dm-raid test\nshell/lvconvert-raid-reshape.sh occasionally:\n\n[root@fedora ~]# cat /proc/1982/stack\n[\u003c0\u003e] stop_sync_thread+0x1ab/0x270 [md_mod]\n[\u003c0\u003e] md_frozen_sync_thread+0x5c/0xa0 [md_mod]\n[\u003c0\u003e] raid_presuspend+0x1e/0x70 [dm_raid]\n[\u003c0\u003e] dm_table_presuspend_targets+0x40/0xb0 [dm_mod]\n[\u003c0\u003e] __dm_destroy+0x2a5/0x310 [dm_mod]\n[\u003c0\u003e] dm_destroy+0x16/0x30 [dm_mod]\n[\u003c0\u003e] dev_remove+0x165/0x290 [dm_mod]\n[\u003c0\u003e] ctl_ioctl+0x4bb/0x7b0 [dm_mod]\n[\u003c0\u003e] dm_ctl_ioctl+0x11/0x20 [dm_mod]\n[\u003c0\u003e] vfs_ioctl+0x21/0x60\n[\u003c0\u003e] __x64_sys_ioctl+0xb9/0xe0\n[\u003c0\u003e] do_syscall_64+0xc6/0x230\n[\u003c0\u003e] entry_SYSCALL_64_after_hwframe+0x6c/0x74\n\nMeanwhile mddev-\u003erecovery is:\nMD_RECOVERY_RUNNING |\nMD_RECOVERY_INTR |\nMD_RECOVERY_RESHAPE |\nMD_RECOVERY_FROZEN\n\nFix this problem by remove the code to register sync_thread directly\nfrom raid10 and raid5. And let md_check_recovery() to register\nsync_thread."
          }
        ],
        "id": "CVE-2024-26756",
        "lastModified": "2024-04-03T17:24:18.150",
        "metrics": {},
        "published": "2024-04-03T17:15:52.150",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/13b520fb62b772e408f9b79c5fe18ad414e90417"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ad39c08186f8a0f221337985036ba86731d6aafe"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}


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