FKIE_CVE-2022-49076

Vulnerability from fkie_nvd - Published: 2025-02-26 07:00 - Updated: 2026-06-17 05:17
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Fix use-after-free bug for mm struct Under certain conditions, such as MPI_Abort, the hfi1 cleanup code may represent the last reference held on the task mm. hfi1_mmu_rb_unregister() then drops the last reference and the mm is freed before the final use in hfi1_release_user_pages(). A new task may allocate the mm structure while it is still being used, resulting in problems. One manifestation is corruption of the mmap_sem counter leading to a hang in down_write(). Another is corruption of an mm struct that is in use by another task.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0b7186d657ee55e2cdefae498f07d5c1961e8023Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2bbac98d0930e8161b1957dc0ec99de39ade1b3cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5a9a1b24ddb510715f8f621263938186579a965cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5f54364ff6cfcd14cddf5441c4a490bb28dd69f7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9ca11bd8222a612de0d2f54d050bfcf61ae2883fPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.18
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/hfi1/mmu_rb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5f54364ff6cfcd14cddf5441c4a490bb28dd69f7",
              "status": "affected",
              "version": "3d2a9d642512c21a12d19b9250e7a835dcb41a79",
              "versionType": "git"
            },
            {
              "lessThan": "9ca11bd8222a612de0d2f54d050bfcf61ae2883f",
              "status": "affected",
              "version": "3d2a9d642512c21a12d19b9250e7a835dcb41a79",
              "versionType": "git"
            },
            {
              "lessThan": "0b7186d657ee55e2cdefae498f07d5c1961e8023",
              "status": "affected",
              "version": "3d2a9d642512c21a12d19b9250e7a835dcb41a79",
              "versionType": "git"
            },
            {
              "lessThan": "5a9a1b24ddb510715f8f621263938186579a965c",
              "status": "affected",
              "version": "3d2a9d642512c21a12d19b9250e7a835dcb41a79",
              "versionType": "git"
            },
            {
              "lessThan": "2bbac98d0930e8161b1957dc0ec99de39ade1b3c",
              "status": "affected",
              "version": "3d2a9d642512c21a12d19b9250e7a835dcb41a79",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5732f83596f8a573f2cde814cc76a54e1a8995c7",
              "versionType": "git"
            },
            {
              "lessThan": "5.10",
              "status": "affected",
              "version": "5.9.12",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/hfi1/mmu_rb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "lessThan": "5.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.20",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6B0C772B-3345-4A9D-A48A-E0EB3B5CCA85",
              "versionEndExcluding": "5.10.111",
              "versionStartIncluding": "5.9.12",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D25878D3-7761-4E9F-8919-E92CD53896E0",
              "versionEndExcluding": "5.15.34",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "ABBBA66E-0244-4621-966B-9790AF1EEB00",
              "versionEndExcluding": "5.16.20",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AE420AC7-1E59-4398-B84F-71F4B4337762",
              "versionEndExcluding": "5.17.3",
              "versionStartIncluding": "5.17",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "6AD94161-84BB-42E6-9882-4FC0C42E9FC1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/hfi1: Fix use-after-free bug for mm struct\n\nUnder certain conditions, such as MPI_Abort, the hfi1 cleanup code may\nrepresent the last reference held on the task mm.\nhfi1_mmu_rb_unregister() then drops the last reference and the mm is freed\nbefore the final use in hfi1_release_user_pages().  A new task may\nallocate the mm structure while it is still being used, resulting in\nproblems. One manifestation is corruption of the mmap_sem counter leading\nto a hang in down_write().  Another is corruption of an mm struct that is\nin use by another task."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/hfi1: Se corrige el error de use-after-free para la estructura mm En determinadas condiciones, como MPI_Abort, el c\u00f3digo de limpieza hfi1 puede representar la \u00faltima referencia retenida en la tarea mm. Luego, hfi1_mmu_rb_unregister() elimina la \u00faltima referencia y la mm se libera antes del uso final en hfi1_release_user_pages(). Una nueva tarea puede asignar la estructura mm mientras a\u00fan se est\u00e1 utilizando, lo que genera problemas. Una manifestaci\u00f3n es la corrupci\u00f3n del contador mmap_sem que provoca un bloqueo en down_write(). Otra es la corrupci\u00f3n de una estructura mm que est\u00e1 en uso por otra tarea."
    }
  ],
  "id": "CVE-2022-49076",
  "lastModified": "2026-06-17T05:17:00.823",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-49076",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-02-27T18:17:39.018953Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-02-26T07:00:44.943",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0b7186d657ee55e2cdefae498f07d5c1961e8023"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2bbac98d0930e8161b1957dc0ec99de39ade1b3c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5a9a1b24ddb510715f8f621263938186579a965c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5f54364ff6cfcd14cddf5441c4a490bb28dd69f7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9ca11bd8222a612de0d2f54d050bfcf61ae2883f"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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