{"schemaVersion":3,"id":"CVE-2010-4247","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen before 3.4.0 for the Linux kernel 2.6.18, and possibly other versions, allows guest OS users to cause a denial of service (infinite loop and CPU consumption) via a large production request index to the blkback or blktap back-end drivers.  NOTE: some of these details are obtained from third party information.","dates":{"published":"2011-01-11T01:00:00.000Z","modified":"2024-08-07T03:34:37.933Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.5,"severity":"medium","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:A/AC:L/Au:S/C:N/I:N/A:C","computed":false,"selection":"backend-summary"},"metrics":[{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5.5,"severity":"medium","vector":"AV:A/AC:L/Au:S/C:N/I:N/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00725,"percentile":0.53237,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00725},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00725,"percentile":0.53237}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00725,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00725,"percentile":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