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CVE-2024-50133 (GCVE-0-2024-50133)

Vulnerability from cvelistv5 – Published: 2024-11-05 17:10 – Updated: 2026-05-11 20:46
VLAI
Title
LoongArch: Don't crash in stack_top() for tasks without vDSO
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
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 20:21 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 803b0fc5c3f2baa6e54978cd576407896f789b08 , < a67d4a02bf43e15544179895ede7d5f97b84b550 (git)
Affected: 803b0fc5c3f2baa6e54978cd576407896f789b08 , < a94c197d4d749954dfaa37e907fcc8c04e4aad7e (git)
Affected: 803b0fc5c3f2baa6e54978cd576407896f789b08 , < 041cc3860b06770357876d1114d615333b0fbf31 (git)
Affected: 803b0fc5c3f2baa6e54978cd576407896f789b08 , < 134475a9ab8487527238d270639a8cb74c10aab2 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.115 , ≤ 6.1.* (semver)
Unaffected: 6.6.59 , ≤ 6.6.* (semver)
Unaffected: 6.11.6 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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            "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"
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                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T14:20:49+00:00",
      "cve": "CVE-2024-50133",
      "id": "CVE-2024-50133",
      "initial_release_date": "2024-11-05T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: LoongArch: Don\u0026#39;t crash in stack_top() for tasks without vDSO",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50133.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2025-11-03T22:25:53.158Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "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"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-50133",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-10-01T20:21:23.672110Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-476",
                    "description": "CWE-476 NULL Pointer Dereference",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-10-01T15:16:50.321Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "arch/loongarch/kernel/process.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "a67d4a02bf43e15544179895ede7d5f97b84b550",
                  "status": "affected",
                  "version": "803b0fc5c3f2baa6e54978cd576407896f789b08",
                  "versionType": "git"
                },
                {
                  "lessThan": "a94c197d4d749954dfaa37e907fcc8c04e4aad7e",
                  "status": "affected",
                  "version": "803b0fc5c3f2baa6e54978cd576407896f789b08",
                  "versionType": "git"
                },
                {
                  "lessThan": "041cc3860b06770357876d1114d615333b0fbf31",
                  "status": "affected",
                  "version": "803b0fc5c3f2baa6e54978cd576407896f789b08",
                  "versionType": "git"
                },
                {
                  "lessThan": "134475a9ab8487527238d270639a8cb74c10aab2",
                  "status": "affected",
                  "version": "803b0fc5c3f2baa6e54978cd576407896f789b08",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "arch/loongarch/kernel/process.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.19"
                },
                {
                  "lessThan": "5.19",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.115",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.59",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.11.*",
                  "status": "unaffected",
                  "version": "6.11.6",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.12",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.115",
                      "versionStartIncluding": "5.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.59",
                      "versionStartIncluding": "5.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.11.6",
                      "versionStartIncluding": "5.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12",
                      "versionStartIncluding": "5.19",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "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"
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-05-04T09:46:54.188Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/a67d4a02bf43e15544179895ede7d5f97b84b550"
            },
            {
              "url": "https://git.kernel.org/stable/c/a94c197d4d749954dfaa37e907fcc8c04e4aad7e"
            },
            {
              "url": "https://git.kernel.org/stable/c/041cc3860b06770357876d1114d615333b0fbf31"
            },
            {
              "url": "https://git.kernel.org/stable/c/134475a9ab8487527238d270639a8cb74c10aab2"
            }
          ],
          "title": "LoongArch: Don\u0027t crash in stack_top() for tasks without vDSO",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-50133",
        "datePublished": "2024-11-05T17:10:58.264Z",
        "dateReserved": "2024-10-21T19:36:19.955Z",
        "dateUpdated": "2025-11-03T22:25:53.158Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.