{
   "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: fix resync softlockup when bitmap size is less than array size\n\nIs is reported that for dm-raid10, lvextend + lvchange --syncaction will\ntrigger following softlockup:\n\nkernel:watchdog: BUG: soft lockup - CPU#3 stuck for 26s! [mdX_resync:6976]\nCPU: 7 PID: 3588 Comm: mdX_resync Kdump: loaded Not tainted 6.9.0-rc4-next-20240419 #1\nRIP: 0010:_raw_spin_unlock_irq+0x13/0x30\nCall Trace:\n <TASK>\n md_bitmap_start_sync+0x6b/0xf0\n raid10_sync_request+0x25c/0x1b40 [raid10]\n md_do_sync+0x64b/0x1020\n md_thread+0xa7/0x170\n kthread+0xcf/0x100\n ret_from_fork+0x30/0x50\n ret_from_fork_asm+0x1a/0x30\n\nAnd the detailed process is as follows:\n\nmd_do_sync\n j = mddev->resync_min\n while (j < max_sectors)\n  sectors = raid10_sync_request(mddev, j, &skipped)\n   if (!md_bitmap_start_sync(..., &sync_blocks))\n    // md_bitmap_start_sync set sync_blocks to 0\n    return sync_blocks + sectors_skippe;\n  // sectors = 0;\n  j += sectors;\n  // j never change\n\nRoot cause is that commit 301867b1c168 (\"md/raid10: check\nslab-out-of-bounds in md_bitmap_get_counter\") return early from\nmd_bitmap_get_counter(), without setting returned blocks.\n\nFix this problem by always set returned blocks from\nmd_bitmap_get_counter\"(), as it used to be.\n\nNoted that this patch just fix the softlockup problem in kernel, the\ncase that bitmap size doesn't match array size still need to be fixed."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/md/md-bitmap.c"
               ],
               "versions": [
                  {
                     "version": "374fb914304d",
                     "lessThan": "d4b9c764d48f",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "b0b971fe7d61",
                     "lessThan": "43771597feba",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "39fa14e824ac",
                     "lessThan": "3f5b73ef8fd6",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "a134dd582c0d",
                     "lessThan": "69296914bfd5",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "be1a3ec63a84",
                     "lessThan": "71e8e4f288e7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "301867b1c168",
                     "lessThan": "c9566b812c8f",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "301867b1c168",
                     "lessThan": "5817f43ae1a1",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "301867b1c168",
                     "lessThan": "8bbc71315e0a",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "301867b1c168",
                     "lessThan": "f0e729af2eb6",
                     "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-bitmap.c"
               ],
               "versions": [
                  {
                     "version": "6.5",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.5",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.316",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.278",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.219",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.161",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.93",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.33",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8.12",
                     "lessThanOrEqual": "6.8.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9.3",
                     "lessThanOrEqual": "6.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/d4b9c764d48fa41caa24cfb4275f3aa9fb4bd798"
            },
            {
               "url": "https://git.kernel.org/stable/c/43771597feba89a839c5f893716df88ae5c237ce"
            },
            {
               "url": "https://git.kernel.org/stable/c/3f5b73ef8fd6268cbc968b308d8eafe56fda97f3"
            },
            {
               "url": "https://git.kernel.org/stable/c/69296914bfd508c85935bf5f711cad9b0fe78492"
            },
            {
               "url": "https://git.kernel.org/stable/c/71e8e4f288e74a896b6d9cd194f3bab12bd7a10f"
            },
            {
               "url": "https://git.kernel.org/stable/c/c9566b812c8f66160466cc1e29df6d3646add0b1"
            },
            {
               "url": "https://git.kernel.org/stable/c/5817f43ae1a118855676f57ef7ab50e37eac7482"
            },
            {
               "url": "https://git.kernel.org/stable/c/8bbc71315e0ae4bb7e37f8d43b915e1cb01a481b"
            },
            {
               "url": "https://git.kernel.org/stable/c/f0e729af2eb6bee9eb58c4df1087f14ebaefe26b"
            }
         ],
         "title": "md: fix resync softlockup when bitmap size is less than array size",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-38598",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}