nvd-json-data-feeds/CVE-2024/CVE-2024-501xx/CVE-2024-50133.json

{
  "id": "CVE-2024-50133",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-11-05T18:15:16.030",
  "lastModified": "2024-11-07T21:17:35.673",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Don't crash in stack_top() for tasks without vDSO\n\nNot all tasks have a vDSO mapped, for example kthreads never do. If such\na task ever ends up calling stack_top(), it will derefence the NULL vdso\npointer and crash.\n\nThis can for example happen when using kunit:\n\n\t[<9000000000203874>] stack_top+0x58/0xa8\n\t[<90000000002956cc>] arch_pick_mmap_layout+0x164/0x220\n\t[<90000000003c284c>] kunit_vm_mmap_init+0x108/0x12c\n\t[<90000000003c1fbc>] __kunit_add_resource+0x38/0x8c\n\t[<90000000003c2704>] kunit_vm_mmap+0x88/0xc8\n\t[<9000000000410b14>] usercopy_test_init+0xbc/0x25c\n\t[<90000000003c1db4>] kunit_try_run_case+0x5c/0x184\n\t[<90000000003c3d54>] kunit_generic_run_threadfn_adapter+0x24/0x48\n\t[<900000000022e4bc>] kthread+0xc8/0xd4\n\t[<9000000000200ce8>] ret_from_kernel_thread+0xc/0xa4"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: LoongArch: No se bloquea en stack_top() para tareas sin vDSO No todas las tareas tienen un vDSO asignado, por ejemplo, kthreads nunca lo tiene. Si alguna vez una tarea de este tipo termina llamando a stack_top(), desreferenciar\u00e1 el puntero vdso NULL y se bloquear\u00e1. Esto puede suceder, por ejemplo, al usar kunit: [&lt;9000000000203874&gt;] stack_top+0x58/0xa8 [&lt;90000000002956cc&gt;] arch_pick_mmap_layout+0x164/0x220 [&lt;90000000003c284c&gt;] kunit_vm_mmap_init+0x108/0x12c [&lt;90000000003c1fbc&gt;] __kunit_add_resource+0x38/0x8c [&lt;90000000003c2704&gt;] kunit_vm_mmap+0x88/0xc8 [&lt;9000000000410b14&gt;] usercopy_test_init+0xbc/0x25c [&lt;90000000003c1db4&gt;] kunit_try_run_case+0x5c/0x184 [&lt;90000000003c3d54&gt;] kunit_generic_run_threadfn_adapter+0x24/0x48 [&lt;900000000022e4bc&gt;] kthread+0xc8/0xd4 [&lt;9000000000200ce8&gt;] ret_from_kernel_thread+0xc/0xa4"
    }
  ],
  "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": "CWE-476"
        }
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    }
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