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{"bugzilla": {"description": "kernel: s390/cio: fix race condition during online processing", "id": "2278281", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2278281"}, "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-362", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ns390/cio: fix race condition during online processing\nA race condition exists in ccw_device_set_online() that can cause the\nonline process to fail, leaving the affected device in an inconsistent\nstate. As a result, subsequent attempts to set that device online fail\nwith return code ENODEV.\nThe problem occurs when a path verification request arrives after\na wait for final device state completed, but before the result state\nis evaluated.\nFix this by ensuring that the CCW-device lock is held between\ndetermining final state and checking result state.\nNote that since:\ncommit 2297791c92d0 (\"s390/cio: dont unregister subchannel from child-drivers\")\npath verification requests are much more likely to occur during boot,\nresulting in an increased chance of this race condition occurring.", "A flaw was found in the Linux kernel\u2019s S390 device driver. A race condition can occur during online processing due to improper locking, causing the device to be in an inconsistent state and resulting in denial of service."], "name": "CVE-2024-27009", "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": "2024-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-27009\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-27009\nhttps://lore.kernel.org/linux-cve-announce/2024050148-CVE-2024-27009-d63d@gregkh/T"], "statement": "The S390 device driver in the Linux kernel shipped in Red Hat Enterprise Linux is not affected by this vulnerability because the vulnerable code was introduced in a newer version of the Linux kernel.", "threat_severity": "Moderate"}