fkie_cve-2024-50133
Vulnerability from fkie_nvd
Published
2024-11-05 18:15
Modified
2024-11-07 21:17
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: LoongArch: Don't crash in stack_top() for tasks without vDSO Not all tasks have a vDSO mapped, for example kthreads never do. If such a task ever ends up calling stack_top(), it will derefence the NULL vdso pointer and crash. This can for example happen when using kunit: [<9000000000203874>] stack_top+0x58/0xa8 [<90000000002956cc>] arch_pick_mmap_layout+0x164/0x220 [<90000000003c284c>] kunit_vm_mmap_init+0x108/0x12c [<90000000003c1fbc>] __kunit_add_resource+0x38/0x8c [<90000000003c2704>] kunit_vm_mmap+0x88/0xc8 [<9000000000410b14>] usercopy_test_init+0xbc/0x25c [<90000000003c1db4>] kunit_try_run_case+0x5c/0x184 [<90000000003c3d54>] kunit_generic_run_threadfn_adapter+0x24/0x48 [<900000000022e4bc>] kthread+0xc8/0xd4 [<9000000000200ce8>] ret_from_kernel_thread+0xc/0xa4
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/041cc3860b06770357876d1114d615333b0fbf31Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/134475a9ab8487527238d270639a8cb74c10aab2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a67d4a02bf43e15544179895ede7d5f97b84b550Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a94c197d4d749954dfaa37e907fcc8c04e4aad7ePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.12
linux linux_kernel 6.12
linux linux_kernel 6.12
linux linux_kernel 6.12


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B049DFAE-9BF4-40E0-BBF0-BF8F84C42A75",
              "versionEndExcluding": "6.1.115",
              "versionStartIncluding": "5.19",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5D15CA59-D15C-4ACD-8B03-A072DEAD2081",
              "versionEndExcluding": "6.6.59",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E4486B12-007B-4794-9857-F07145637AA1",
              "versionEndExcluding": "6.11.6",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "E0F717D8-3014-4F84-8086-0124B2111379",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Don\u0027t 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[\u003c9000000000203874\u003e] stack_top+0x58/0xa8\n\t[\u003c90000000002956cc\u003e] arch_pick_mmap_layout+0x164/0x220\n\t[\u003c90000000003c284c\u003e] kunit_vm_mmap_init+0x108/0x12c\n\t[\u003c90000000003c1fbc\u003e] __kunit_add_resource+0x38/0x8c\n\t[\u003c90000000003c2704\u003e] kunit_vm_mmap+0x88/0xc8\n\t[\u003c9000000000410b14\u003e] usercopy_test_init+0xbc/0x25c\n\t[\u003c90000000003c1db4\u003e] kunit_try_run_case+0x5c/0x184\n\t[\u003c90000000003c3d54\u003e] kunit_generic_run_threadfn_adapter+0x24/0x48\n\t[\u003c900000000022e4bc\u003e] kthread+0xc8/0xd4\n\t[\u003c9000000000200ce8\u003e] 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: [\u0026lt;9000000000203874\u0026gt;] stack_top+0x58/0xa8 [\u0026lt;90000000002956cc\u0026gt;] arch_pick_mmap_layout+0x164/0x220 [\u0026lt;90000000003c284c\u0026gt;] kunit_vm_mmap_init+0x108/0x12c [\u0026lt;90000000003c1fbc\u0026gt;] __kunit_add_resource+0x38/0x8c [\u0026lt;90000000003c2704\u0026gt;] kunit_vm_mmap+0x88/0xc8 [\u0026lt;9000000000410b14\u0026gt;] usercopy_test_init+0xbc/0x25c [\u0026lt;90000000003c1db4\u0026gt;] kunit_try_run_case+0x5c/0x184 [\u0026lt;90000000003c3d54\u0026gt;] kunit_generic_run_threadfn_adapter+0x24/0x48 [\u0026lt;900000000022e4bc\u0026gt;] kthread+0xc8/0xd4 [\u0026lt;9000000000200ce8\u0026gt;] ret_from_kernel_thread+0xc/0xa4"
    }
  ],
  "id": "CVE-2024-50133",
  "lastModified": "2024-11-07T21:17:35.673",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-11-05T18:15:16.030",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/041cc3860b06770357876d1114d615333b0fbf31"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/134475a9ab8487527238d270639a8cb74c10aab2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a67d4a02bf43e15544179895ede7d5f97b84b550"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a94c197d4d749954dfaa37e907fcc8c04e4aad7e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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