{"id":"CVE-2022-48675","summary":"IB/core: Fix a nested dead lock as part of ODP flow","details":"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-\u003eumem_mutex locked as required by\nib_umem_odp_map_dma_and_lock() might trigger in the same task the\nexit_mmap()-\u003e__mmu_notifier_release()-\u003emlx5_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]  \u003cTASK\u003e\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]  \u003c/TASK\u003e","modified":"2026-04-02T08:26:49.521710Z","published":"2024-05-03T14:52:06.518Z","related":["SUSE-SU-2024:1644-1","SUSE-SU-2024:1659-1","SUSE-SU-2024:1663-1","SUSE-SU-2024:2011-1","SUSE-SU-2024:2189-1","SUSE-SU-2025:0231-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48675.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/819110054b14d7272b4188db997a3d80f75ab785"},{"type":"WEB","url":"https://git.kernel.org/stable/c/83c43fd872e32c8071d5582eb7c40f573a8342f3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/85eaeb5058f0f04dffb124c97c86b4f18db0b833"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e8de6cb5755eae7b793d8c00c8696c8667d44a7f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48675.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-48675"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"36f30e486dce22345c2dd3a3ba439c12cd67f6ba"},{"fixed":"e8de6cb5755eae7b793d8c00c8696c8667d44a7f"},{"fixed":"819110054b14d7272b4188db997a3d80f75ab785"},{"fixed":"83c43fd872e32c8071d5582eb7c40f573a8342f3"},{"fixed":"85eaeb5058f0f04dffb124c97c86b4f18db0b833"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48675.json"}}],"schema_version":"1.7.5"}