cve-2024-56706
Vulnerability from cvelistv5
Published
2024-12-28 09:46
Modified
2025-01-20 06:26
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/cpum_sf: Fix and protect memory allocation of SDBs with mutex Reservation of the PMU hardware is done at first event creation and is protected by a pair of mutex_lock() and mutex_unlock(). After reservation of the PMU hardware the memory required for the PMUs the event is to be installed on is allocated by allocate_buffers() and alloc_sampling_buffer(). This done outside of the mutex protection. Without mutex protection two or more concurrent invocations of perf_event_init() may run in parallel. This can lead to allocation of Sample Data Blocks (SDBs) multiple times for the same PMU. Prevent this and protect memory allocation of SDBs by mutex.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4b3bdfa89635db6a53e02955548bd07bebcae233
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f55bd479d8663a4a4e403b3d308d3d1aa33d92df
Impacted products
Vendor Product Version
Linux Linux Version: 8a6fe8f21ec4f049a7b1fe120ad50a5065a9c7a8
Version: 8a6fe8f21ec4f049a7b1fe120ad50a5065a9c7a8
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   Linux Linux Version: 6.12
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{
   containers: {
      cna: {
         affected: [
            {
               defaultStatus: "unaffected",
               product: "Linux",
               programFiles: [
                  "arch/s390/kernel/perf_cpum_sf.c",
               ],
               repo: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               vendor: "Linux",
               versions: [
                  {
                     lessThan: "4b3bdfa89635db6a53e02955548bd07bebcae233",
                     status: "affected",
                     version: "8a6fe8f21ec4f049a7b1fe120ad50a5065a9c7a8",
                     versionType: "git",
                  },
                  {
                     lessThan: "f55bd479d8663a4a4e403b3d308d3d1aa33d92df",
                     status: "affected",
                     version: "8a6fe8f21ec4f049a7b1fe120ad50a5065a9c7a8",
                     versionType: "git",
                  },
               ],
            },
            {
               defaultStatus: "affected",
               product: "Linux",
               programFiles: [
                  "arch/s390/kernel/perf_cpum_sf.c",
               ],
               repo: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               vendor: "Linux",
               versions: [
                  {
                     status: "affected",
                     version: "6.12",
                  },
                  {
                     lessThan: "6.12",
                     status: "unaffected",
                     version: "0",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "6.12.*",
                     status: "unaffected",
                     version: "6.12.2",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "*",
                     status: "unaffected",
                     version: "6.13",
                     versionType: "original_commit_for_fix",
                  },
               ],
            },
         ],
         descriptions: [
            {
               lang: "en",
               value: "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.",
            },
         ],
         providerMetadata: {
            dateUpdated: "2025-01-20T06:26:34.993Z",
            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-5f407fcff5a0",
         },
      },
   },
   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: "2025-01-20T06:26:34.993Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
   "vulnerability-lookup:meta": {
      nvd: "{\"cve\":{\"id\":\"CVE-2024-56706\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-28T10:15:19.400\",\"lastModified\":\"2024-12-28T10:15:19.400\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4b3bdfa89635db6a53e02955548bd07bebcae233\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f55bd479d8663a4a4e403b3d308d3d1aa33d92df\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
   },
}


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