{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npadata: Fix possible divide-by-0 panic in padata_mt_helper()\n\nWe are hit with a not easily reproducible divide-by-0 panic in padata.c at\nbootup time.\n\n  [   10.017908] Oops: divide error: 0000 1 PREEMPT SMP NOPTI\n  [   10.017908] CPU: 26 PID: 2627 Comm: kworker/u1666:1 Not tainted 6.10.0-15.el10.x86_64 #1\n  [   10.017908] Hardware name: Lenovo ThinkSystem SR950 [7X12CTO1WW]/[7X12CTO1WW], BIOS [PSE140J-2.30] 07/20/2021\n  [   10.017908] Workqueue: events_unbound padata_mt_helper\n  [   10.017908] RIP: 0010:padata_mt_helper+0x39/0xb0\n    :\n  [   10.017963] Call Trace:\n  [   10.017968]  <TASK>\n  [   10.018004]  ? padata_mt_helper+0x39/0xb0\n  [   10.018084]  process_one_work+0x174/0x330\n  [   10.018093]  worker_thread+0x266/0x3a0\n  [   10.018111]  kthread+0xcf/0x100\n  [   10.018124]  ret_from_fork+0x31/0x50\n  [   10.018138]  ret_from_fork_asm+0x1a/0x30\n  [   10.018147]  </TASK>\n\nLooking at the padata_mt_helper() function, the only way a divide-by-0\npanic can happen is when ps->chunk_size is 0.  The way that chunk_size is\ninitialized in padata_do_multithreaded(), chunk_size can be 0 when the\nmin_chunk in the passed-in padata_mt_job structure is 0.\n\nFix this divide-by-0 panic by making sure that chunk_size will be at least\n1 no matter what the input parameters are."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "kernel/padata.c"
               ],
               "versions": [
                  {
                     "version": "004ed42638f4",
                     "lessThan": "ab8b397d5997",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "004ed42638f4",
                     "lessThan": "8f5ffd2af727",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "004ed42638f4",
                     "lessThan": "a29cfcb848c3",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "004ed42638f4",
                     "lessThan": "924f788c906d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "004ed42638f4",
                     "lessThan": "da0ffe84fcc1",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "004ed42638f4",
                     "lessThan": "6d45e1c948a8",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "kernel/padata.c"
               ],
               "versions": [
                  {
                     "version": "5.8",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.8",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.224",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.165",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.105",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.46",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10.5",
                     "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/ab8b397d5997d8c37610252528edc54bebf9f6d3"
            },
            {
               "url": "https://git.kernel.org/stable/c/8f5ffd2af7274853ff91d6cd62541191d9fbd10d"
            },
            {
               "url": "https://git.kernel.org/stable/c/a29cfcb848c31f22b4de6a531c3e1d68c9bfe09f"
            },
            {
               "url": "https://git.kernel.org/stable/c/924f788c906dccaca30acab86c7124371e1d6f2c"
            },
            {
               "url": "https://git.kernel.org/stable/c/da0ffe84fcc1627a7dff82c80b823b94236af905"
            },
            {
               "url": "https://git.kernel.org/stable/c/6d45e1c948a8b7ed6ceddb14319af69424db730c"
            }
         ],
         "title": "padata: Fix possible divide-by-0 panic in padata_mt_helper()",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-43889",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}