{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Fix ufshcd_clear_cmd racing issue\n\nWhen ufshcd_clear_cmd is racing with the completion ISR, the completed tag\nof the request's mq_hctx pointer will be set to NULL by the ISR.  And\nufshcd_clear_cmd's call to ufshcd_mcq_req_to_hwq will get NULL pointer KE.\nReturn success when the request is completed by ISR because sq does not\nneed cleanup.\n\nThe racing flow is:\n\nThread A\nufshcd_err_handler\t\t\t\t\tstep 1\n\tufshcd_try_to_abort_task\n\t\tufshcd_cmd_inflight(true)\t\tstep 3\n\t\tufshcd_clear_cmd\n\t\t\t...\n\t\t\tufshcd_mcq_req_to_hwq\n\t\t\tblk_mq_unique_tag\n\t\t\t\trq->mq_hctx->queue_num\tstep 5\n\nThread B\nufs_mtk_mcq_intr(cq complete ISR)\t\t\tstep 2\n\tscsi_done\n\t\t...\n\t\t__blk_mq_free_request\n\t\t\trq->mq_hctx = NULL;\t\tstep 4\n\nBelow is KE back trace:\n\n  ufshcd_try_to_abort_task: cmd pending in the device. tag = 6\n  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000194\n   pc : [0xffffffd589679bf8] blk_mq_unique_tag+0x8/0x14\n   lr : [0xffffffd5862f95b4] ufshcd_mcq_sq_cleanup+0x6c/0x1cc [ufs_mediatek_mod_ise]\n   Workqueue: ufs_eh_wq_0 ufshcd_err_handler [ufs_mediatek_mod_ise]\n   Call trace:\n    dump_backtrace+0xf8/0x148\n    show_stack+0x18/0x24\n    dump_stack_lvl+0x60/0x7c\n    dump_stack+0x18/0x3c\n    mrdump_common_die+0x24c/0x398 [mrdump]\n    ipanic_die+0x20/0x34 [mrdump]\n    notify_die+0x80/0xd8\n    die+0x94/0x2b8\n    __do_kernel_fault+0x264/0x298\n    do_page_fault+0xa4/0x4b8\n    do_translation_fault+0x38/0x54\n    do_mem_abort+0x58/0x118\n    el1_abort+0x3c/0x5c\n    el1h_64_sync_handler+0x54/0x90\n    el1h_64_sync+0x68/0x6c\n    blk_mq_unique_tag+0x8/0x14\n    ufshcd_clear_cmd+0x34/0x118 [ufs_mediatek_mod_ise]\n    ufshcd_try_to_abort_task+0x2c8/0x5b4 [ufs_mediatek_mod_ise]\n    ufshcd_err_handler+0xa7c/0xfa8 [ufs_mediatek_mod_ise]\n    process_one_work+0x208/0x4fc\n    worker_thread+0x228/0x438\n    kthread+0x104/0x1d4\n    ret_from_fork+0x10/0x20"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/ufs/core/ufs-mcq.c"
               ],
               "versions": [
                  {
                     "version": "8d7290348992",
                     "lessThan": "bed089600833",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8d7290348992",
                     "lessThan": "11d81233f4eb",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8d7290348992",
                     "lessThan": "9307a998cb98",
                     "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/ufs/core/ufs-mcq.c"
               ],
               "versions": [
                  {
                     "version": "6.5",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.5",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.41",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9.10",
                     "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/bed0896008334eeee4b4bfd7150491ca098cbf72"
            },
            {
               "url": "https://git.kernel.org/stable/c/11d81233f4ebe6907b12c79ad7d8787aa4db0633"
            },
            {
               "url": "https://git.kernel.org/stable/c/9307a998cb9846a2557fdca286997430bee36a2a"
            }
         ],
         "title": "scsi: ufs: core: Fix ufshcd_clear_cmd racing issue",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-41054",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}