{"cve":"CVE-2022-50705","nvd":{"published":"2025-12-24T11:15:50.680","modified":"2026-06-17T05:24:02.307","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/rw: defer fsnotify calls to task context\n\nWe can't call these off the kiocb completion as that might be off\nsoft/hard irq context. Defer the calls to when we process the\ntask_work for this request. That avoids valid complaints like:\n\nstack backtrace:\nCPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.0.0-rc6-syzkaller-00321-g105a36f3694e #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022\nCall Trace:\n <IRQ>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n print_usage_bug kernel/locking/lockdep.c:3961 [inline]\n valid_state kernel/locking/lockdep.c:3973 [inline]\n mark_lock_irq kernel/locking/lockdep.c:4176 [inline]\n mark_lock.part.0.cold+0x18/0xd8 kernel/locking/lockdep.c:4632\n mark_lock kernel/locking/lockdep.c:4596 [inline]\n mark_usage kernel/locking/lockdep.c:4527 [inline]\n __lock_acquire+0x11d9/0x56d0 kernel/locking/lockdep.c:5007\n lock_acquire kernel/locking/lockdep.c:5666 [inline]\n lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631\n __fs_reclaim_acquire mm/page_alloc.c:4674 [inline]\n fs_reclaim_acquire+0x115/0x160 mm/page_alloc.c:4688\n might_alloc include/linux/sched/mm.h:271 [inline]\n slab_pre_alloc_hook mm/slab.h:700 [inline]\n slab_alloc mm/slab.c:3278 [inline]\n __kmem_cache_alloc_lru mm/slab.c:3471 [inline]\n kmem_cache_alloc+0x39/0x520 mm/slab.c:3491\n fanotify_alloc_fid_event fs/notify/fanotify/fanotify.c:580 [inline]\n fanotify_alloc_event fs/notify/fanotify/fanotify.c:813 [inline]\n fanotify_handle_event+0x1130/0x3f40 fs/notify/fanotify/fanotify.c:948\n send_to_group fs/notify/fsnotify.c:360 [inline]\n fsnotify+0xafb/0x1680 fs/notify/fsnotify.c:570\n __fsnotify_parent+0x62f/0xa60 fs/notify/fsnotify.c:230\n fsnotify_parent include/linux/fsnotify.h:77 [inline]\n fsnotify_file include/linux/fsnotify.h:99 [inline]\n fsnotify_access include/linux/fsnotify.h:309 [inline]\n __io_complete_rw_common+0x485/0x720 io_uring/rw.c:195\n io_complete_rw+0x1a/0x1f0 io_uring/rw.c:228\n iomap_dio_complete_work fs/iomap/direct-io.c:144 [inline]\n iomap_dio_bio_end_io+0x438/0x5e0 fs/iomap/direct-io.c:178\n bio_endio+0x5f9/0x780 block/bio.c:1564\n req_bio_endio block/blk-mq.c:695 [inline]\n blk_update_request+0x3fc/0x1300 block/blk-mq.c:825\n scsi_end_request+0x7a/0x9a0 drivers/scsi/scsi_lib.c:541\n scsi_io_completion+0x173/0x1f70 drivers/scsi/scsi_lib.c:971\n scsi_complete+0x122/0x3b0 drivers/scsi/scsi_lib.c:1438\n blk_complete_reqs+0xad/0xe0 block/blk-mq.c:1022\n __do_softirq+0x1d3/0x9c6 kernel/softirq.c:571\n invoke_softirq kernel/softirq.c:445 [inline]\n __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650\n irq_exit_rcu+0x5/0x20 kernel/softirq.c:662\n common_interrupt+0xa9/0xc0 arch/x86/kernel/irq.c:240","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/2a853c206e553dd9c0a55c22858fd6a446d93e15","https://git.kernel.org/stable/c/89a410dbd0f159ddd308f19d6eb682fc753e4771","https://git.kernel.org/stable/c/b000145e9907809406d8164c3b2b8861d95aecd1"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:17:07.138532058+00:00"},"epss":{"cve":"CVE-2022-50705","score":0.00198,"percentile":0.09631,"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."]}