{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nIB/core: Fix a nested dead lock as part of ODP flow\n\nFix a nested dead lock as part of ODP flow by using mmput_async().\n\nFrom the below call trace [1] can see that calling mmput() once we have\nthe umem_odp->umem_mutex locked as required by\nib_umem_odp_map_dma_and_lock() might trigger in the same task the\nexit_mmap()->__mmu_notifier_release()->mlx5_ib_invalidate_range() which\nmay dead lock when trying to lock the same mutex.\n\nMoving to use mmput_async() will solve the problem as the above\nexit_mmap() flow will be called in other task and will be executed once\nthe lock will be available.\n\n[1]\n[64843.077665] task:kworker/u133:2  state:D stack:    0 pid:80906 ppid:\n2 flags:0x00004000\n[64843.077672] Workqueue: mlx5_ib_page_fault mlx5_ib_eqe_pf_action [mlx5_ib]\n[64843.077719] Call Trace:\n[64843.077722]  <TASK>\n[64843.077724]  __schedule+0x23d/0x590\n[64843.077729]  schedule+0x4e/0xb0\n[64843.077735]  schedule_preempt_disabled+0xe/0x10\n[64843.077740]  __mutex_lock.constprop.0+0x263/0x490\n[64843.077747]  __mutex_lock_slowpath+0x13/0x20\n[64843.077752]  mutex_lock+0x34/0x40\n[64843.077758]  mlx5_ib_invalidate_range+0x48/0x270 [mlx5_ib]\n[64843.077808]  __mmu_notifier_release+0x1a4/0x200\n[64843.077816]  exit_mmap+0x1bc/0x200\n[64843.077822]  ? walk_page_range+0x9c/0x120\n[64843.077828]  ? __cond_resched+0x1a/0x50\n[64843.077833]  ? mutex_lock+0x13/0x40\n[64843.077839]  ? uprobe_clear_state+0xac/0x120\n[64843.077860]  mmput+0x5f/0x140\n[64843.077867]  ib_umem_odp_map_dma_and_lock+0x21b/0x580 [ib_core]\n[64843.077931]  pagefault_real_mr+0x9a/0x140 [mlx5_ib]\n[64843.077962]  pagefault_mr+0xb4/0x550 [mlx5_ib]\n[64843.077992]  pagefault_single_data_segment.constprop.0+0x2ac/0x560\n[mlx5_ib]\n[64843.078022]  mlx5_ib_eqe_pf_action+0x528/0x780 [mlx5_ib]\n[64843.078051]  process_one_work+0x22b/0x3d0\n[64843.078059]  worker_thread+0x53/0x410\n[64843.078065]  ? process_one_work+0x3d0/0x3d0\n[64843.078073]  kthread+0x12a/0x150\n[64843.078079]  ? set_kthread_struct+0x50/0x50\n[64843.078085]  ret_from_fork+0x22/0x30\n[64843.078093]  </TASK>"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/infiniband/core/umem_odp.c",
                  "kernel/fork.c"
               ],
               "versions": [
                  {
                     "version": "36f30e486dce",
                     "lessThan": "e8de6cb5755e",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "36f30e486dce",
                     "lessThan": "819110054b14",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "36f30e486dce",
                     "lessThan": "83c43fd872e3",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "36f30e486dce",
                     "lessThan": "85eaeb5058f0",
                     "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/infiniband/core/umem_odp.c",
                  "kernel/fork.c"
               ],
               "versions": [
                  {
                     "version": "5.10",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.10",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.143",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.68",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.19.9",
                     "lessThanOrEqual": "5.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.0",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/e8de6cb5755eae7b793d8c00c8696c8667d44a7f"
            },
            {
               "url": "https://git.kernel.org/stable/c/819110054b14d7272b4188db997a3d80f75ab785"
            },
            {
               "url": "https://git.kernel.org/stable/c/83c43fd872e32c8071d5582eb7c40f573a8342f3"
            },
            {
               "url": "https://git.kernel.org/stable/c/85eaeb5058f0f04dffb124c97c86b4f18db0b833"
            }
         ],
         "title": "IB/core: Fix a nested dead lock as part of ODP flow",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2022-48675",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}