CVE-2024-56665
Vulnerability from cvelistv5
Published
2024-12-27 15:06
Modified
2025-01-20 06:25
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf,perf: Fix invalid prog_array access in perf_event_detach_bpf_prog Syzbot reported [1] crash that happens for following tracing scenario: - create tracepoint perf event with attr.inherit=1, attach it to the process and set bpf program to it - attached process forks -> chid creates inherited event the new child event shares the parent's bpf program and tp_event (hence prog_array) which is global for tracepoint - exit both process and its child -> release both events - first perf_event_detach_bpf_prog call will release tp_event->prog_array and second perf_event_detach_bpf_prog will crash, because tp_event->prog_array is NULL The fix makes sure the perf_event_detach_bpf_prog checks prog_array is valid before it tries to remove the bpf program from it. [1] https://lore.kernel.org/bpf/Z1MR6dCIKajNS6nU@krava/T/#m91dbf0688221ec7a7fc95e896a7ef9ff93b0b8ad
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/842e5af282453983586e2eae3c8eaf252de5f22fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/978c4486cca5c7b9253d3ab98a88c8e769cb9bbdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2b6b47662d5f2dfce92e5ffbdcac8229f321d9dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dfb15ddf3b65e0df2129f9756d1b4fa78055cdb3Patch
Impacted products
Vendor Product Version
Linux Linux Version: 7a5c653ede645693422e43cccaa3e8f905d21c74
Version: 21db2f35fa97e4a3447f2edeb7b2569a8bfdc83b
Version: 0ee288e69d033850bc87abe0f9cc3ada24763d7f
Version: 0ee288e69d033850bc87abe0f9cc3ada24763d7f
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   Linux Linux Version: 6.12
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/bpf_trace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "842e5af282453983586e2eae3c8eaf252de5f22f",
              "status": "affected",
              "version": "7a5c653ede645693422e43cccaa3e8f905d21c74",
              "versionType": "git"
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              "status": "affected",
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              "versionType": "git"
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              "status": "affected",
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            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/bpf_trace.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": "6.1.*",
              "status": "unaffected",
              "version": "6.1.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.67",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.6",
              "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\nbpf,perf: Fix invalid prog_array access in perf_event_detach_bpf_prog\n\nSyzbot reported [1] crash that happens for following tracing scenario:\n\n  - create tracepoint perf event with attr.inherit=1, attach it to the\n    process and set bpf program to it\n  - attached process forks -\u003e chid creates inherited event\n\n    the new child event shares the parent\u0027s bpf program and tp_event\n    (hence prog_array) which is global for tracepoint\n\n  - exit both process and its child -\u003e release both events\n  - first perf_event_detach_bpf_prog call will release tp_event-\u003eprog_array\n    and second perf_event_detach_bpf_prog will crash, because\n    tp_event-\u003eprog_array is NULL\n\nThe fix makes sure the perf_event_detach_bpf_prog checks prog_array\nis valid before it tries to remove the bpf program from it.\n\n[1] https://lore.kernel.org/bpf/Z1MR6dCIKajNS6nU@krava/T/#m91dbf0688221ec7a7fc95e896a7ef9ff93b0b8ad"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-20T06:25:21.264Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/842e5af282453983586e2eae3c8eaf252de5f22f"
        },
        {
          "url": "https://git.kernel.org/stable/c/c2b6b47662d5f2dfce92e5ffbdcac8229f321d9d"
        },
        {
          "url": "https://git.kernel.org/stable/c/dfb15ddf3b65e0df2129f9756d1b4fa78055cdb3"
        },
        {
          "url": "https://git.kernel.org/stable/c/978c4486cca5c7b9253d3ab98a88c8e769cb9bbd"
        }
      ],
      "title": "bpf,perf: Fix invalid prog_array access in perf_event_detach_bpf_prog",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56665",
    "datePublished": "2024-12-27T15:06:27.205Z",
    "dateReserved": "2024-12-27T15:00:39.844Z",
    "dateUpdated": "2025-01-20T06:25:21.264Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-56665\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T15:15:26.400\",\"lastModified\":\"2025-01-06T18:42:12.090\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf,perf: Fix invalid prog_array access in perf_event_detach_bpf_prog\\n\\nSyzbot reported [1] crash that happens for following tracing scenario:\\n\\n  - create tracepoint perf event with attr.inherit=1, attach it to the\\n    process and set bpf program to it\\n  - attached process forks -\u003e chid creates inherited event\\n\\n    the new child event shares the parent\u0027s bpf program and tp_event\\n    (hence prog_array) which is global for tracepoint\\n\\n  - exit both process and its child -\u003e release both events\\n  - first perf_event_detach_bpf_prog call will release tp_event-\u003eprog_array\\n    and second perf_event_detach_bpf_prog will crash, because\\n    tp_event-\u003eprog_array is NULL\\n\\nThe fix makes sure the perf_event_detach_bpf_prog checks prog_array\\nis valid before it tries to remove the bpf program from it.\\n\\n[1] https://lore.kernel.org/bpf/Z1MR6dCIKajNS6nU@krava/T/#m91dbf0688221ec7a7fc95e896a7ef9ff93b0b8ad\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf,perf: Se corrige el acceso no v\u00e1lido a prog_array en perf_event_detach_bpf_prog Syzbot inform\u00f3 [1] un fallo que ocurre en el siguiente escenario de seguimiento: - crear un evento perf de tracepoint con attr.inherit=1, adjuntarlo al proceso y establecerle el programa bpf - el proceso adjunto se bifurca -\u0026gt; chid crea un evento heredado el nuevo evento secundario comparte el programa bpf del padre y tp_event (de ah\u00ed prog_array) que es global para tracepoint - salir tanto del proceso como de su hijo -\u0026gt; liberar ambos eventos - la primera llamada perf_event_detach_bpf_prog liberar\u00e1 tp_event-\u0026gt;prog_array y la segunda perf_event_detach_bpf_prog se bloquear\u00e1, porque tp_event-\u0026gt;prog_array es NULL La correcci\u00f3n asegura que las comprobaciones perf_event_detach_bpf_prog prog_array es v\u00e1lido antes de intentar eliminar el programa bpf de \u00e9l. [1] https://lore.kernel.org/bpf/Z1MR6dCIKajNS6nU@krava/T/#m91dbf0688221ec7a7fc95e896a7ef9ff93b0b8ad\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15.170\",\"versionEndExcluding\":\"5.16\",\"matchCriteriaId\":\"C7FE0726-C761-4349-9521-83EAB0A1FCB6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1.115\",\"versionEndExcluding\":\"6.1.121\",\"matchCriteriaId\":\"5DAD94E3-C170-44EA-93AC-5712A955ED0C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6.59\",\"versionEndExcluding\":\"6.6.67\",\"matchCriteriaId\":\"1CA5A1BF-E0D3-405F-8671-0923F72D88B8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.11.6\",\"versionEndExcluding\":\"6.12.6\",\"matchCriteriaId\":\"A23E2ECD-FEEE-4F72-A40D-756B9EC8B8DF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"5A073481-106D-4B15-B4C7-FB0213B8E1D4\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/842e5af282453983586e2eae3c8eaf252de5f22f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/978c4486cca5c7b9253d3ab98a88c8e769cb9bbd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c2b6b47662d5f2dfce92e5ffbdcac8229f321d9d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/dfb15ddf3b65e0df2129f9756d1b4fa78055cdb3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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