{"api_version":"1","generated_at":"2026-10-28T11:16:08+00:00","cve":"CVE-2024-56706","urls":{"html":"https://cve.report/CVE-2024-56706","api":"https://cve.report/api/cve/CVE-2024-56706.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2024-56706","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-56706"},"summary":{"title":"s390/cpum_sf: Fix and protect memory allocation of SDBs with mutex","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/cpum_sf: Fix and protect memory allocation of SDBs with mutex\n\nReservation of the PMU hardware is done at first event creation\nand is protected by a pair of mutex_lock() and mutex_unlock().\nAfter reservation of the PMU hardware the memory\nrequired for the PMUs the event is to be installed on is\nallocated by allocate_buffers() and alloc_sampling_buffer().\nThis done outside of the mutex protection.\nWithout mutex protection two or more concurrent invocations of\nperf_event_init() may run in parallel.\nThis can lead to allocation of Sample Data Blocks (SDBs)\nmultiple times for the same PMU.\nPrevent this and protect memory allocation of SDBs by\nmutex.","state":"PUBLISHED","assigner":"Linux","published_at":"2024-12-28 10:15:19","updated_at":"2026-08-04 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by\nmutex."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-08-04T09:39:44.965Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4b3bdfa89635db6a53e02955548bd07bebcae233"},{"url":"https://git.kernel.org/stable/c/f55bd479d8663a4a4e403b3d308d3d1aa33d92df"}],"title":"s390/cpum_sf: Fix and protect memory allocation of SDBs with mutex","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2024-56706","datePublished":"2024-12-28T09:46:27.297Z","dateReserved":"2024-12-27T15:00:39.856Z","dateUpdated":"2026-08-04T09:39:44.965Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2024-12-28 10:15:19","lastModifiedDate":"2026-08-04 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Fix and protect memory allocation of SDBs with mut","CVE":"CVE-2024-56706","Year":"2024"},"notes":[{"CveYear":"2024","CveId":"56706","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/cpum_sf: Fix and protect memory allocation of SDBs with mutex\n\nReservation of the PMU hardware is done at first event creation\nand is protected by a pair of mutex_lock() and mutex_unlock().\nAfter reservation of the PMU hardware the memory\nrequired for the PMUs the event is to be installed on is\nallocated by allocate_buffers() and alloc_sampling_buffer().\nThis done outside of the mutex protection.\nWithout mutex protection two or more concurrent invocations of\nperf_event_init() may run in parallel.\nThis can lead to allocation of Sample Data Blocks (SDBs)\nmultiple times for the same PMU.\nPrevent this and protect memory allocation of SDBs by\nmutex.","Type":"Description","Title":"s390/cpum_sf: Fix and protect memory allocation of SDBs with mut"}]}}}