{"api_version":"1","generated_at":"2026-10-01T19:08:52+00:00","cve":"CVE-2026-97619","urls":{"html":"https://cve.report/CVE-2026-97619","api":"https://cve.report/api/cve/CVE-2026-97619.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-97619","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-97619"},"summary":{"title":"io_uring/rw: end write accounting from ->ki_complete","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/rw: end write accounting from ->ki_complete\n\nCommit b000145e9907 moved both the fsnotify calls and the write\naccounting out of the kiocb completion handler and into the\nio_req_rw_complete() task_work. However, only the fsnotify part actually\nneeded to move as it may sleep. Ending the write accounting is just a\npercpu_up_read() on the superblock writers sem.\n\nDeferring it is a problem, because it makes dropping SB_FREEZE_WRITE\nprotection depend on the ring owner getting to running task_work. But\nthe task may be blocked in freeze_super(), causing it to never get to\nthat:\n\n  task                             io-wq worker\n  --------------------------------------------------------------\n  io_write()\n    io_kiocb_start_write()         (takes sb_writers, hidden from\n                                    lockdep by __sb_writers_release)\n    write_iter() -> -EIOCBQUEUED\n  ioctl(FS_IOC_SHUTDOWN)\n    bdev_freeze()\n      freeze_super()\n        percpu_down_write()        <- waits for the reader above\n                                   io_write()\n                                     kiocb_start_write()\n                                       percpu_down_read()  <- queued\n                                                              behind the\n                                                              writer\n  <bio completes>\n    io_complete_rw()\n      queues io_req_rw_complete()  <- never runs, task is in D state\n\nEnd the write from io_complete_rw() instead, and leave only the fsnotify\ncalls in task_work.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:16","updated_at":"2026-09-25 11:17:16"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/cc580cee4dfa2ec9099c30ecbd4d804cbb996432","name":"https://git.kernel.org/stable/c/cc580cee4dfa2ec9099c30ecbd4d804cbb996432","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/796aa0547557e63338657ed1c487906f9fac4c73","name":"https://git.kernel.org/stable/c/796aa0547557e63338657ed1c487906f9fac4c73","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/055d43a1233edbd80e558889258105ce63051bcd","name":"https://git.kernel.org/stable/c/055d43a1233edbd80e558889258105ce63051bcd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97619","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97619","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b000145e9907809406d8164c3b2b8861d95aecd1 cc580cee4dfa2ec9099c30ecbd4d804cbb996432 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b000145e9907809406d8164c3b2b8861d95aecd1 055d43a1233edbd80e558889258105ce63051bcd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b000145e9907809406d8164c3b2b8861d95aecd1 796aa0547557e63338657ed1c487906f9fac4c73 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ea2e6286e3e89a115ae554e20ba9aec2b2e1ddff git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 89a410dbd0f159ddd308f19d6eb682fc753e4771 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2a853c206e553dd9c0a55c22858fd6a446d93e15 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.10.165 5.11 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15.90 5.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.0.3 6.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.1","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"97619","cve":"CVE-2026-97619","epss":"0.001980000","percentile":"0.085890000","score_date":"2026-09-27","updated_at":"2026-09-28 00:02:24"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["io_uring/rw.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"cc580cee4dfa2ec9099c30ecbd4d804cbb996432","status":"affected","version":"b000145e9907809406d8164c3b2b8861d95aecd1","versionType":"git"},{"lessThan":"055d43a1233edbd80e558889258105ce63051bcd","status":"affected","version":"b000145e9907809406d8164c3b2b8861d95aecd1","versionType":"git"},{"lessThan":"796aa0547557e63338657ed1c487906f9fac4c73","status":"affected","version":"b000145e9907809406d8164c3b2b8861d95aecd1","versionType":"git"},{"status":"affected","version":"ea2e6286e3e89a115ae554e20ba9aec2b2e1ddff","versionType":"git"},{"status":"affected","version":"89a410dbd0f159ddd308f19d6eb682fc753e4771","versionType":"git"},{"status":"affected","version":"2a853c206e553dd9c0a55c22858fd6a446d93e15","versionType":"git"},{"lessThan":"5.11","status":"affected","version":"5.10.165","versionType":"semver"},{"lessThan":"5.16","status":"affected","version":"5.15.90","versionType":"semver"},{"lessThan":"6.1","status":"affected","version":"6.0.3","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["io_uring/rw.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.1"},{"lessThan":"6.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"6.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"6.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc3","versionStartIncluding":"6.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.165","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.90","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/rw: end write accounting from ->ki_complete\n\nCommit b000145e9907 moved both the fsnotify calls and the write\naccounting out of the kiocb completion handler and into the\nio_req_rw_complete() task_work. However, only the fsnotify part actually\nneeded to move as it may sleep. Ending the write accounting is just a\npercpu_up_read() on the superblock writers sem.\n\nDeferring it is a problem, because it makes dropping SB_FREEZE_WRITE\nprotection depend on the ring owner getting to running task_work. But\nthe task may be blocked in freeze_super(), causing it to never get to\nthat:\n\n  task                             io-wq worker\n  --------------------------------------------------------------\n  io_write()\n    io_kiocb_start_write()         (takes sb_writers, hidden from\n                                    lockdep by __sb_writers_release)\n    write_iter() -> -EIOCBQUEUED\n  ioctl(FS_IOC_SHUTDOWN)\n    bdev_freeze()\n      freeze_super()\n        percpu_down_write()        <- waits for the reader above\n                                   io_write()\n                                     kiocb_start_write()\n                                       percpu_down_read()  <- queued\n                                                              behind the\n                                                              writer\n  <bio completes>\n    io_complete_rw()\n      queues io_req_rw_complete()  <- never runs, task is in D state\n\nEnd the write from io_complete_rw() instead, and leave only the fsnotify\ncalls in task_work."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:22:25.644Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/cc580cee4dfa2ec9099c30ecbd4d804cbb996432"},{"url":"https://git.kernel.org/stable/c/055d43a1233edbd80e558889258105ce63051bcd"},{"url":"https://git.kernel.org/stable/c/796aa0547557e63338657ed1c487906f9fac4c73"}],"title":"io_uring/rw: end write accounting from ->ki_complete","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-97619","datePublished":"2026-09-25T10:22:25.644Z","dateReserved":"2026-09-24T16:01:01.159Z","dateUpdated":"2026-09-25T10:22:25.644Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:16","lastModifiedDate":"2026-09-25 11:17:16","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"97619","Ordinal":"1","Title":"io_uring/rw: end write accounting from ->ki_complete","CVE":"CVE-2026-97619","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"97619","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/rw: end write accounting from ->ki_complete\n\nCommit b000145e9907 moved both the fsnotify calls and the write\naccounting out of the kiocb completion handler and into the\nio_req_rw_complete() task_work. However, only the fsnotify part actually\nneeded to move as it may sleep. Ending the write accounting is just a\npercpu_up_read() on the superblock writers sem.\n\nDeferring it is a problem, because it makes dropping SB_FREEZE_WRITE\nprotection depend on the ring owner getting to running task_work. But\nthe task may be blocked in freeze_super(), causing it to never get to\nthat:\n\n  task                             io-wq worker\n  --------------------------------------------------------------\n  io_write()\n    io_kiocb_start_write()         (takes sb_writers, hidden from\n                                    lockdep by __sb_writers_release)\n    write_iter() -> -EIOCBQUEUED\n  ioctl(FS_IOC_SHUTDOWN)\n    bdev_freeze()\n      freeze_super()\n        percpu_down_write()        <- waits for the reader above\n                                   io_write()\n                                     kiocb_start_write()\n                                       percpu_down_read()  <- queued\n                                                              behind the\n                                                              writer\n  <bio completes>\n    io_complete_rw()\n      queues io_req_rw_complete()  <- never runs, task is in D state\n\nEnd the write from io_complete_rw() instead, and leave only the fsnotify\ncalls in task_work.","Type":"Description","Title":"io_uring/rw: end write accounting from ->ki_complete"}]}}}