{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97619", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-24T16:01:01.159Z", "datePublished": "2026-09-25T10:22:25.644Z", "dateUpdated": "2026-10-21T12:53:30.123Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:53:30.123Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["io_uring/rw.c"], "versions": [{"version": "b000145e9907809406d8164c3b2b8861d95aecd1", "lessThan": "ed1cead97afb9c398bd7ab344a3c1ee34ab73af9", "status": "affected", "versionType": "git"}, {"version": "b000145e9907809406d8164c3b2b8861d95aecd1", "lessThan": "696459029f3b65c070c91b729478475582f1dcdf", "status": "affected", "versionType": "git"}, {"version": "b000145e9907809406d8164c3b2b8861d95aecd1", "lessThan": "cc580cee4dfa2ec9099c30ecbd4d804cbb996432", "status": "affected", "versionType": "git"}, {"version": "b000145e9907809406d8164c3b2b8861d95aecd1", "lessThan": "055d43a1233edbd80e558889258105ce63051bcd", "status": "affected", "versionType": "git"}, {"version": "b000145e9907809406d8164c3b2b8861d95aecd1", "lessThan": "796aa0547557e63338657ed1c487906f9fac4c73", "status": "affected", "versionType": "git"}, {"version": "ea2e6286e3e89a115ae554e20ba9aec2b2e1ddff", "status": "affected", "versionType": "git"}, {"version": "89a410dbd0f159ddd308f19d6eb682fc753e4771", "status": "affected", "versionType": "git"}, {"version": "2a853c206e553dd9c0a55c22858fd6a446d93e15", "status": "affected", "versionType": "git"}, {"version": "5.10.165", "lessThan": "5.11", "status": "affected", "versionType": "semver"}, {"version": "5.15.90", "lessThan": "5.16", "status": "affected", "versionType": "semver"}, {"version": "6.0.3", "lessThan": "6.1", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["io_uring/rw.c"], "versions": [{"version": "6.1", "status": "affected"}, {"version": "0", "lessThan": "6.1", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "7.3"}, {"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"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ed1cead97afb9c398bd7ab344a3c1ee34ab73af9"}, {"url": "https://git.kernel.org/stable/c/696459029f3b65c070c91b729478475582f1dcdf"}, {"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"}}}}

{}

{"affected": [{"affectedData": [{"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": "ed1cead97afb9c398bd7ab344a3c1ee34ab73af9", "status": "affected", "version": "b000145e9907809406d8164c3b2b8861d95aecd1", "versionType": "git"}, {"lessThan": "696459029f3b65c070c91b729478475582f1dcdf", "status": "affected", "version": "b000145e9907809406d8164c3b2b8861d95aecd1", "versionType": "git"}, {"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": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-97619", "lastModified": "2026-10-21T13:21:15.190", "metrics": {}, "published": "2026-09-25T11:17:16.117", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/055d43a1233edbd80e558889258105ce63051bcd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/696459029f3b65c070c91b729478475582f1dcdf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/796aa0547557e63338657ed1c487906f9fac4c73"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cc580cee4dfa2ec9099c30ecbd4d804cbb996432"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ed1cead97afb9c398bd7ab344a3c1ee34ab73af9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: io_uring/rw: end write accounting from ->ki_complete", "id": "2541309", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541309"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-833", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nio_uring/rw: end write accounting from ->ki_complete\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.\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:\ntask io-wq worker\n--------------------------------------------------------------\nio_write()\nio_kiocb_start_write() (takes sb_writers, hidden from\nlockdep by __sb_writers_release)\nwrite_iter() -> -EIOCBQUEUED\nioctl(FS_IOC_SHUTDOWN)\nbdev_freeze()\nfreeze_super()\npercpu_down_write() <- waits for the reader above\nio_write()\nkiocb_start_write()\npercpu_down_read() <- queued\nbehind the\nwriter\n<bio completes>\nio_complete_rw()\nqueues io_req_rw_complete() <- never runs, task is in D state\nEnd the write from io_complete_rw() instead, and leave only the fsnotify\ncalls in task_work.", "A flaw was found in the Linux kernel's io_uring subsystem. Improperly deferring write completion accounting to background task work can create a circular locking dependency when a filesystem freeze operation is performed. A local user could exploit this flaw by issuing asynchronous write operations while initiating a filesystem freeze, causing the kernel to deadlock and resulting in a Denial of Service (DoS)."], "name": "CVE-2026-97619", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97619\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97619\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97619.mbox"], "threat_severity": "Low"}