CVE-2023-53582 (GCVE-0-2023-53582)
Vulnerability from cvelistv5
Published
2025-10-04 15:43
Modified
2025-10-04 15:43
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds Fix a stack-out-of-bounds read in brcmfmac that occurs when 'buf' that is not null-terminated is passed as an argument of strreplace() in brcmf_c_preinit_dcmds(). This buffer is filled with a CLM version string by memcpy() in brcmf_fil_iovar_data_get(). Ensure buf is null-terminated. Found by a modified version of syzkaller. [ 33.004414][ T1896] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available [ 33.013486][ T1896] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43236/3 wl0: Nov 30 2011 17:33:42 version 5.90.188.22 [ 33.021554][ T1896] ================================================================== [ 33.022379][ T1896] BUG: KASAN: stack-out-of-bounds in strreplace+0xf2/0x110 [ 33.023122][ T1896] Read of size 1 at addr ffffc90001d6efc8 by task kworker/0:2/1896 [ 33.023852][ T1896] [ 33.024096][ T1896] CPU: 0 PID: 1896 Comm: kworker/0:2 Tainted: G O 5.14.0+ #132 [ 33.024927][ T1896] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 [ 33.026065][ T1896] Workqueue: usb_hub_wq hub_event [ 33.026581][ T1896] Call Trace: [ 33.026896][ T1896] dump_stack_lvl+0x57/0x7d [ 33.027372][ T1896] print_address_description.constprop.0.cold+0xf/0x334 [ 33.028037][ T1896] ? strreplace+0xf2/0x110 [ 33.028403][ T1896] ? strreplace+0xf2/0x110 [ 33.028807][ T1896] kasan_report.cold+0x83/0xdf [ 33.029283][ T1896] ? strreplace+0xf2/0x110 [ 33.029666][ T1896] strreplace+0xf2/0x110 [ 33.029966][ T1896] brcmf_c_preinit_dcmds+0xab1/0xc40 [ 33.030351][ T1896] ? brcmf_c_set_joinpref_default+0x100/0x100 [ 33.030787][ T1896] ? rcu_read_lock_sched_held+0xa1/0xd0 [ 33.031223][ T1896] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 33.031661][ T1896] ? lock_acquire+0x19d/0x4e0 [ 33.032091][ T1896] ? find_held_lock+0x2d/0x110 [ 33.032605][ T1896] ? brcmf_usb_deq+0x1a7/0x260 [ 33.033087][ T1896] ? brcmf_usb_rx_fill_all+0x5a/0xf0 [ 33.033582][ T1896] brcmf_attach+0x246/0xd40 [ 33.034022][ T1896] ? wiphy_new_nm+0x1476/0x1d50 [ 33.034383][ T1896] ? kmemdup+0x30/0x40 [ 33.034722][ T1896] brcmf_usb_probe+0x12de/0x1690 [ 33.035223][ T1896] ? brcmf_usbdev_qinit.constprop.0+0x470/0x470 [ 33.035833][ T1896] usb_probe_interface+0x25f/0x710 [ 33.036315][ T1896] really_probe+0x1be/0xa90 [ 33.036656][ T1896] __driver_probe_device+0x2ab/0x460 [ 33.037026][ T1896] ? usb_match_id.part.0+0x88/0xc0 [ 33.037383][ T1896] driver_probe_device+0x49/0x120 [ 33.037790][ T1896] __device_attach_driver+0x18a/0x250 [ 33.038300][ T1896] ? driver_allows_async_probing+0x120/0x120 [ 33.038986][ T1896] bus_for_each_drv+0x123/0x1a0 [ 33.039906][ T1896] ? bus_rescan_devices+0x20/0x20 [ 33.041412][ T1896] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 33.041861][ T1896] ? trace_hardirqs_on+0x1c/0x120 [ 33.042330][ T1896] __device_attach+0x207/0x330 [ 33.042664][ T1896] ? device_bind_driver+0xb0/0xb0 [ 33.043026][ T1896] ? kobject_uevent_env+0x230/0x12c0 [ 33.043515][ T1896] bus_probe_device+0x1a2/0x260 [ 33.043914][ T1896] device_add+0xa61/0x1ce0 [ 33.044227][ T1896] ? __mutex_unlock_slowpath+0xe7/0x660 [ 33.044891][ T1896] ? __fw_devlink_link_to_suppliers+0x550/0x550 [ 33.045531][ T1896] usb_set_configuration+0x984/0x1770 [ 33.046051][ T1896] ? kernfs_create_link+0x175/0x230 [ 33.046548][ T1896] usb_generic_driver_probe+0x69/0x90 [ 33.046931][ T1896] usb_probe_device+0x9c/0x220 [ 33.047434][ T1896] really_probe+0x1be/0xa90 [ 33.047760][ T1896] __driver_probe_device+0x2ab/0x460 [ 33.048134][ T1896] driver_probe_device+0x49/0x120 [ 33.048516][ T1896] __device_attach_driver+0x18a/0x250 [ 33.048910][ T1896] ? driver_allows_async_probing+0x120/0x120 ---truncated---
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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          ],
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          "vendor": "Linux",
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              "version": "4.19.276",
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              "status": "unaffected",
              "version": "5.4.235",
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            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.173",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.99",
              "versionType": "semver"
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              "version": "6.1.16",
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              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.276",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                {
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds\n\nFix a stack-out-of-bounds read in brcmfmac that occurs\nwhen \u0027buf\u0027 that is not null-terminated is passed as an argument of\nstrreplace() in brcmf_c_preinit_dcmds(). This buffer is filled with\na CLM version string by memcpy() in brcmf_fil_iovar_data_get().\nEnsure buf is null-terminated.\n\nFound by a modified version of syzkaller.\n\n[   33.004414][ T1896] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available\n[   33.013486][ T1896] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43236/3 wl0: Nov 30 2011 17:33:42 version 5.90.188.22\n[   33.021554][ T1896] ==================================================================\n[   33.022379][ T1896] BUG: KASAN: stack-out-of-bounds in strreplace+0xf2/0x110\n[   33.023122][ T1896] Read of size 1 at addr ffffc90001d6efc8 by task kworker/0:2/1896\n[   33.023852][ T1896]\n[   33.024096][ T1896] CPU: 0 PID: 1896 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #132\n[   33.024927][ T1896] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014\n[   33.026065][ T1896] Workqueue: usb_hub_wq hub_event\n[   33.026581][ T1896] Call Trace:\n[   33.026896][ T1896]  dump_stack_lvl+0x57/0x7d\n[   33.027372][ T1896]  print_address_description.constprop.0.cold+0xf/0x334\n[   33.028037][ T1896]  ? strreplace+0xf2/0x110\n[   33.028403][ T1896]  ? strreplace+0xf2/0x110\n[   33.028807][ T1896]  kasan_report.cold+0x83/0xdf\n[   33.029283][ T1896]  ? strreplace+0xf2/0x110\n[   33.029666][ T1896]  strreplace+0xf2/0x110\n[   33.029966][ T1896]  brcmf_c_preinit_dcmds+0xab1/0xc40\n[   33.030351][ T1896]  ? brcmf_c_set_joinpref_default+0x100/0x100\n[   33.030787][ T1896]  ? rcu_read_lock_sched_held+0xa1/0xd0\n[   33.031223][ T1896]  ? rcu_read_lock_bh_held+0xb0/0xb0\n[   33.031661][ T1896]  ? lock_acquire+0x19d/0x4e0\n[   33.032091][ T1896]  ? find_held_lock+0x2d/0x110\n[   33.032605][ T1896]  ? brcmf_usb_deq+0x1a7/0x260\n[   33.033087][ T1896]  ? brcmf_usb_rx_fill_all+0x5a/0xf0\n[   33.033582][ T1896]  brcmf_attach+0x246/0xd40\n[   33.034022][ T1896]  ? wiphy_new_nm+0x1476/0x1d50\n[   33.034383][ T1896]  ? kmemdup+0x30/0x40\n[   33.034722][ T1896]  brcmf_usb_probe+0x12de/0x1690\n[   33.035223][ T1896]  ? brcmf_usbdev_qinit.constprop.0+0x470/0x470\n[   33.035833][ T1896]  usb_probe_interface+0x25f/0x710\n[   33.036315][ T1896]  really_probe+0x1be/0xa90\n[   33.036656][ T1896]  __driver_probe_device+0x2ab/0x460\n[   33.037026][ T1896]  ? usb_match_id.part.0+0x88/0xc0\n[   33.037383][ T1896]  driver_probe_device+0x49/0x120\n[   33.037790][ T1896]  __device_attach_driver+0x18a/0x250\n[   33.038300][ T1896]  ? driver_allows_async_probing+0x120/0x120\n[   33.038986][ T1896]  bus_for_each_drv+0x123/0x1a0\n[   33.039906][ T1896]  ? bus_rescan_devices+0x20/0x20\n[   33.041412][ T1896]  ? lockdep_hardirqs_on_prepare+0x273/0x3e0\n[   33.041861][ T1896]  ? trace_hardirqs_on+0x1c/0x120\n[   33.042330][ T1896]  __device_attach+0x207/0x330\n[   33.042664][ T1896]  ? device_bind_driver+0xb0/0xb0\n[   33.043026][ T1896]  ? kobject_uevent_env+0x230/0x12c0\n[   33.043515][ T1896]  bus_probe_device+0x1a2/0x260\n[   33.043914][ T1896]  device_add+0xa61/0x1ce0\n[   33.044227][ T1896]  ? __mutex_unlock_slowpath+0xe7/0x660\n[   33.044891][ T1896]  ? __fw_devlink_link_to_suppliers+0x550/0x550\n[   33.045531][ T1896]  usb_set_configuration+0x984/0x1770\n[   33.046051][ T1896]  ? kernfs_create_link+0x175/0x230\n[   33.046548][ T1896]  usb_generic_driver_probe+0x69/0x90\n[   33.046931][ T1896]  usb_probe_device+0x9c/0x220\n[   33.047434][ T1896]  really_probe+0x1be/0xa90\n[   33.047760][ T1896]  __driver_probe_device+0x2ab/0x460\n[   33.048134][ T1896]  driver_probe_device+0x49/0x120\n[   33.048516][ T1896]  __device_attach_driver+0x18a/0x250\n[   33.048910][ T1896]  ? driver_allows_async_probing+0x120/0x120\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-04T15:43:58.493Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3b173b4ad9c001a555f44adc7836d6fe3afbe9ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/423a1297ea72bbddf64dbb0957f2879c0f2aa5d0"
        },
        {
          "url": "https://git.kernel.org/stable/c/0ca2efea4f11c6255061e852ac188264c469c197"
        },
        {
          "url": "https://git.kernel.org/stable/c/a0f0ce1c8ab9fe90618dc394e3d1568b5a9ac154"
        },
        {
          "url": "https://git.kernel.org/stable/c/ecb980dc79709c02f579a9c03cb92ccec189ab38"
        },
        {
          "url": "https://git.kernel.org/stable/c/c02f733024d70105f22de8dd0a1252a0350cd516"
        },
        {
          "url": "https://git.kernel.org/stable/c/660145d708be52f946a82e5b633c020f58f996de"
        }
      ],
      "title": "wifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53582",
    "datePublished": "2025-10-04T15:43:58.493Z",
    "dateReserved": "2025-10-04T15:14:15.926Z",
    "dateUpdated": "2025-10-04T15:43:58.493Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53582\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-04T16:15:53.957\",\"lastModified\":\"2025-10-06T14:56:21.733\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds\\n\\nFix a stack-out-of-bounds read in brcmfmac that occurs\\nwhen \u0027buf\u0027 that is not null-terminated is passed as an argument of\\nstrreplace() in brcmf_c_preinit_dcmds(). This buffer is filled with\\na CLM version string by memcpy() in brcmf_fil_iovar_data_get().\\nEnsure buf is null-terminated.\\n\\nFound by a modified version of syzkaller.\\n\\n[   33.004414][ T1896] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available\\n[   33.013486][ T1896] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43236/3 wl0: Nov 30 2011 17:33:42 version 5.90.188.22\\n[   33.021554][ T1896] ==================================================================\\n[   33.022379][ T1896] BUG: KASAN: stack-out-of-bounds in strreplace+0xf2/0x110\\n[   33.023122][ T1896] Read of size 1 at addr ffffc90001d6efc8 by task kworker/0:2/1896\\n[   33.023852][ T1896]\\n[   33.024096][ T1896] CPU: 0 PID: 1896 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #132\\n[   33.024927][ T1896] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014\\n[   33.026065][ T1896] Workqueue: usb_hub_wq hub_event\\n[   33.026581][ T1896] Call Trace:\\n[   33.026896][ T1896]  dump_stack_lvl+0x57/0x7d\\n[   33.027372][ T1896]  print_address_description.constprop.0.cold+0xf/0x334\\n[   33.028037][ T1896]  ? strreplace+0xf2/0x110\\n[   33.028403][ T1896]  ? strreplace+0xf2/0x110\\n[   33.028807][ T1896]  kasan_report.cold+0x83/0xdf\\n[   33.029283][ T1896]  ? strreplace+0xf2/0x110\\n[   33.029666][ T1896]  strreplace+0xf2/0x110\\n[   33.029966][ T1896]  brcmf_c_preinit_dcmds+0xab1/0xc40\\n[   33.030351][ T1896]  ? brcmf_c_set_joinpref_default+0x100/0x100\\n[   33.030787][ T1896]  ? rcu_read_lock_sched_held+0xa1/0xd0\\n[   33.031223][ T1896]  ? rcu_read_lock_bh_held+0xb0/0xb0\\n[   33.031661][ T1896]  ? lock_acquire+0x19d/0x4e0\\n[   33.032091][ T1896]  ? find_held_lock+0x2d/0x110\\n[   33.032605][ T1896]  ? brcmf_usb_deq+0x1a7/0x260\\n[   33.033087][ T1896]  ? brcmf_usb_rx_fill_all+0x5a/0xf0\\n[   33.033582][ T1896]  brcmf_attach+0x246/0xd40\\n[   33.034022][ T1896]  ? wiphy_new_nm+0x1476/0x1d50\\n[   33.034383][ T1896]  ? kmemdup+0x30/0x40\\n[   33.034722][ T1896]  brcmf_usb_probe+0x12de/0x1690\\n[   33.035223][ T1896]  ? brcmf_usbdev_qinit.constprop.0+0x470/0x470\\n[   33.035833][ T1896]  usb_probe_interface+0x25f/0x710\\n[   33.036315][ T1896]  really_probe+0x1be/0xa90\\n[   33.036656][ T1896]  __driver_probe_device+0x2ab/0x460\\n[   33.037026][ T1896]  ? usb_match_id.part.0+0x88/0xc0\\n[   33.037383][ T1896]  driver_probe_device+0x49/0x120\\n[   33.037790][ T1896]  __device_attach_driver+0x18a/0x250\\n[   33.038300][ T1896]  ? driver_allows_async_probing+0x120/0x120\\n[   33.038986][ T1896]  bus_for_each_drv+0x123/0x1a0\\n[   33.039906][ T1896]  ? bus_rescan_devices+0x20/0x20\\n[   33.041412][ T1896]  ? lockdep_hardirqs_on_prepare+0x273/0x3e0\\n[   33.041861][ T1896]  ? trace_hardirqs_on+0x1c/0x120\\n[   33.042330][ T1896]  __device_attach+0x207/0x330\\n[   33.042664][ T1896]  ? device_bind_driver+0xb0/0xb0\\n[   33.043026][ T1896]  ? kobject_uevent_env+0x230/0x12c0\\n[   33.043515][ T1896]  bus_probe_device+0x1a2/0x260\\n[   33.043914][ T1896]  device_add+0xa61/0x1ce0\\n[   33.044227][ T1896]  ? __mutex_unlock_slowpath+0xe7/0x660\\n[   33.044891][ T1896]  ? __fw_devlink_link_to_suppliers+0x550/0x550\\n[   33.045531][ T1896]  usb_set_configuration+0x984/0x1770\\n[   33.046051][ T1896]  ? kernfs_create_link+0x175/0x230\\n[   33.046548][ T1896]  usb_generic_driver_probe+0x69/0x90\\n[   33.046931][ T1896]  usb_probe_device+0x9c/0x220\\n[   33.047434][ T1896]  really_probe+0x1be/0xa90\\n[   33.047760][ T1896]  __driver_probe_device+0x2ab/0x460\\n[   33.048134][ T1896]  driver_probe_device+0x49/0x120\\n[   33.048516][ T1896]  __device_attach_driver+0x18a/0x250\\n[   33.048910][ T1896]  ? driver_allows_async_probing+0x120/0x120\\n---truncated---\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0ca2efea4f11c6255061e852ac188264c469c197\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3b173b4ad9c001a555f44adc7836d6fe3afbe9ec\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/423a1297ea72bbddf64dbb0957f2879c0f2aa5d0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/660145d708be52f946a82e5b633c020f58f996de\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a0f0ce1c8ab9fe90618dc394e3d1568b5a9ac154\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c02f733024d70105f22de8dd0a1252a0350cd516\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ecb980dc79709c02f579a9c03cb92ccec189ab38\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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