{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47569", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-24T15:11:00.729Z", "datePublished": "2024-05-24T15:12:55.394Z", "dateUpdated": "2025-05-04T07:13:50.733Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:13:50.733Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: fail cancellation for EXITING tasks\n\nWARNING: CPU: 1 PID: 20 at fs/io_uring.c:6269 io_try_cancel_userdata+0x3c5/0x640 fs/io_uring.c:6269\nCPU: 1 PID: 20 Comm: kworker/1:0 Not tainted 5.16.0-rc1-syzkaller #0\nWorkqueue: events io_fallback_req_func\nRIP: 0010:io_try_cancel_userdata+0x3c5/0x640 fs/io_uring.c:6269\nCall Trace:\n <TASK>\n io_req_task_link_timeout+0x6b/0x1e0 fs/io_uring.c:6886\n io_fallback_req_func+0xf9/0x1ae fs/io_uring.c:1334\n process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298\n worker_thread+0x658/0x11f0 kernel/workqueue.c:2445\n kthread+0x405/0x4f0 kernel/kthread.c:327\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295\n </TASK>\n\nWe need original task's context to do cancellations, so if it's dying\nand the callback is executed in a fallback mode, fail the cancellation\nattempt."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/io_uring.c"], "versions": [{"version": "89b263f6d56e683ddcf7643140271ef6e36c72b9", "lessThan": "3d2a1e68fd9904fdc1b02f2e7d40ca47df7ba39f", "status": "affected", "versionType": "git"}, {"version": "89b263f6d56e683ddcf7643140271ef6e36c72b9", "lessThan": "617a89484debcd4e7999796d693cf0b77d2519de", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/io_uring.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.6", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16", "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": "5.15", "versionEndExcluding": "5.15.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3d2a1e68fd9904fdc1b02f2e7d40ca47df7ba39f"}, {"url": "https://git.kernel.org/stable/c/617a89484debcd4e7999796d693cf0b77d2519de"}], "title": "io_uring: fail cancellation for EXITING tasks", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.633Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/3d2a1e68fd9904fdc1b02f2e7d40ca47df7ba39f", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/617a89484debcd4e7999796d693cf0b77d2519de", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47569", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:35:11.017717Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:32:50.979Z"}}]}}

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{"bugzilla": {"description": "kernel: io_uring: fail cancellation for EXITING tasks", "id": "2283460", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2283460"}, "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-372", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nio_uring: fail cancellation for EXITING tasks\nWARNING: CPU: 1 PID: 20 at fs/io_uring.c:6269 io_try_cancel_userdata+0x3c5/0x640 fs/io_uring.c:6269\nCPU: 1 PID: 20 Comm: kworker/1:0 Not tainted 5.16.0-rc1-syzkaller #0\nWorkqueue: events io_fallback_req_func\nRIP: 0010:io_try_cancel_userdata+0x3c5/0x640 fs/io_uring.c:6269\nCall Trace:\n<TASK>\nio_req_task_link_timeout+0x6b/0x1e0 fs/io_uring.c:6886\nio_fallback_req_func+0xf9/0x1ae fs/io_uring.c:1334\nprocess_one_work+0x9b2/0x1690 kernel/workqueue.c:2298\nworker_thread+0x658/0x11f0 kernel/workqueue.c:2445\nkthread+0x405/0x4f0 kernel/kthread.c:327\nret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295\n</TASK>\nWe need original task's context to do cancellations, so if it's dying\nand the callback is executed in a fallback mode, fail the cancellation\nattempt."], "name": "CVE-2021-47569", "package_state": [{"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": "Not affected", "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"}], "public_date": "2024-05-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47569\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47569\nhttps://lore.kernel.org/linux-cve-announce/2024052453-CVE-2021-47569-2d3a@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-12T23:05:51.286365+00:00", "updated": "2025-07-12T23:05:51.286423+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}