{"cve":"CVE-2022-48675","nvd":{"published":"2024-05-03T15:15:07.627","modified":"2026-06-17T05:15:53.930","status":"Modified","description":"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>","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-667"],"references":["https://git.kernel.org/stable/c/819110054b14d7272b4188db997a3d80f75ab785","https://git.kernel.org/stable/c/83c43fd872e32c8071d5582eb7c40f573a8342f3","https://git.kernel.org/stable/c/85eaeb5058f0f04dffb124c97c86b4f18db0b833","https://git.kernel.org/stable/c/e8de6cb5755eae7b793d8c00c8696c8667d44a7f","https://git.kernel.org/stable/c/819110054b14d7272b4188db997a3d80f75ab785"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:49:23.840078609+00:00"},"epss":{"cve":"CVE-2022-48675","score":0.00178,"percentile":0.07418,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}