io_uring/rw: defer fsnotify calls to task context

{
  "id": "89875a30af640f61882dfddb19c8a189cb54bedfa8b2a2194ac61af2ad21dfb0",
  "url": "https://osv.dev/vulnerability/CVE-2022-50705",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "io_uring/rw: defer fsnotify calls to task context",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: io_uring/rw: defer fsnotify calls to task context We can't call these off the kiocb completion as that might be off soft/hard irq context. Defer the calls to when we process the task_work for this request. That avoids valid complaints like: stack backtrace: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.0.0-rc6-syzkaller-00321-g105a36f3694e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_usage_bug kernel/locking/lockdep.c:3961 [inline] valid_state kernel/locking/lockdep.c:3973 [inline] mark_lock_irq kernel/locking/lockdep.c:4176 [inline] mark_lock.part.0.cold+0x18/0xd8 kernel/locking/lockdep.c:4632 mark_lock kernel/locking/lockdep.c:4596 [inline] mark_usage kernel/locking/lockdep.c:4527 [inline] __lock_acquire+0x11d9/0x56d0 kernel/locking/lockdep.c:5007 lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __fs_reclaim_acquire mm/page_alloc.c:4674 [inline] fs_reclaim_acquire+0x115/0x160 mm/page_alloc.c:4688 might_alloc include/linux/sched/mm.h:271 [inline] slab_pre_alloc_hook mm/slab.h:700 [inline] slab_alloc mm/slab.c:3278 [inline] __kmem_cache_alloc_lru mm/slab.c:3471 [inline] kmem_cache_alloc+0x39/0x520 mm/slab.c:3491 fanotify_alloc_fid_event fs/notify/fanotify/fanotify.c:580 [inline] fanotify_alloc_event fs",
    "evidence": "osv:CVE-2022-50705",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.90",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.3",
            "evidence": "/affected/1/ranges"
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    "severity": "unknown",
    "structured": {
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      "aliases": [
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      "modified": "2026-10-08T02:49:26.054073252Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/2a853c206e553dd9c0a55c22858fd6a446d93e15",
        "https://git.kernel.org/stable/c/89a410dbd0f159ddd308f19d6eb682fc753e4771",
        "https://git.kernel.org/stable/c/b000145e9907809406d8164c3b2b8861d95aecd1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50705.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50705",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 98300,
  "published_at": "2025-12-24T10:55:20.02+00:00"
}