FKIE_CVE-2024-39497

Vulnerability from fkie_nvd - Published: 2024-07-12 13:15 - Updated: 2026-06-17 07:42
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: drm/shmem-helper: Fix BUG_ON() on mmap(PROT_WRITE, MAP_PRIVATE) Lack of check for copy-on-write (COW) mapping in drm_gem_shmem_mmap allows users to call mmap with PROT_WRITE and MAP_PRIVATE flag causing a kernel panic due to BUG_ON in vmf_insert_pfn_prot: BUG_ON((vma->vm_flags & VM_PFNMAP) && is_cow_mapping(vma->vm_flags)); Return -EINVAL early if COW mapping is detected. This bug affects all drm drivers using default shmem helpers. It can be reproduced by this simple example: void *ptr = mmap(0, size, PROT_WRITE, MAP_PRIVATE, fd, mmap_offset); ptr[0] = 0;
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/03c71c42809ef4b17f5d874cdb2d3bf40e847b86Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1b4a8b89bf6787090b56424d269bf84ba00c3263Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2219e5f97244b79c276751a1167615b9714db1b0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/39bc27bd688066a63e56f7f64ad34fae03fbe3b8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ae63a8c1685e16958560ec08d30defdc5b9cca0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a508a102edf8735adc9bb73d37dd13c38d1a1b10Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/03c71c42809ef4b17f5d874cdb2d3bf40e847b86Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1b4a8b89bf6787090b56424d269bf84ba00c3263Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/39bc27bd688066a63e56f7f64ad34fae03fbe3b8Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.10
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/drm_gem_shmem_helper.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a508a102edf8735adc9bb73d37dd13c38d1a1b10",
              "status": "affected",
              "version": "2194a63a818db71065ebe09c8104f5f021ca4e7b",
              "versionType": "git"
            },
            {
              "lessThan": "3ae63a8c1685e16958560ec08d30defdc5b9cca0",
              "status": "affected",
              "version": "2194a63a818db71065ebe09c8104f5f021ca4e7b",
              "versionType": "git"
            },
            {
              "lessThan": "2219e5f97244b79c276751a1167615b9714db1b0",
              "status": "affected",
              "version": "2194a63a818db71065ebe09c8104f5f021ca4e7b",
              "versionType": "git"
            },
            {
              "lessThan": "1b4a8b89bf6787090b56424d269bf84ba00c3263",
              "status": "affected",
              "version": "2194a63a818db71065ebe09c8104f5f021ca4e7b",
              "versionType": "git"
            },
            {
              "lessThan": "03c71c42809ef4b17f5d874cdb2d3bf40e847b86",
              "status": "affected",
              "version": "2194a63a818db71065ebe09c8104f5f021ca4e7b",
              "versionType": "git"
            },
            {
              "lessThan": "39bc27bd688066a63e56f7f64ad34fae03fbe3b8",
              "status": "affected",
              "version": "2194a63a818db71065ebe09c8104f5f021ca4e7b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/drm_gem_shmem_helper.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "lessThan": "5.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.169",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "122C6878-8F1A-4404-950D-DCF9437389BD",
              "versionEndExcluding": "5.10.229",
              "versionStartIncluding": "5.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "18BEDAD6-86F8-457C-952F-C35698B3D07F",
              "versionEndExcluding": "5.15.169",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "10FD2B3E-C7D9-4A9C-BD64-41877EDF88EB",
              "versionEndExcluding": "6.1.114",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6F019D15-84C0-416B-8C57-7F51B68992F0",
              "versionEndExcluding": "6.6.35",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0ABBBA1D-F79D-4BDB-AA41-D1EDCC4A6975",
              "versionEndExcluding": "6.9.6",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "2EBB4392-5FA6-4DA9-9772-8F9C750109FA",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/shmem-helper: Fix BUG_ON() on mmap(PROT_WRITE, MAP_PRIVATE)\n\nLack of check for copy-on-write (COW) mapping in drm_gem_shmem_mmap\nallows users to call mmap with PROT_WRITE and MAP_PRIVATE flag\ncausing a kernel panic due to BUG_ON in vmf_insert_pfn_prot:\nBUG_ON((vma-\u003evm_flags \u0026 VM_PFNMAP) \u0026\u0026 is_cow_mapping(vma-\u003evm_flags));\n\nReturn -EINVAL early if COW mapping is detected.\n\nThis bug affects all drm drivers using default shmem helpers.\nIt can be reproduced by this simple example:\nvoid *ptr = mmap(0, size, PROT_WRITE, MAP_PRIVATE, fd, mmap_offset);\nptr[0] = 0;"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/shmem-helper: corrige BUG_ON() en mmap(PROT_WRITE, MAP_PRIVATE) La falta de verificaci\u00f3n para el mapeo de copia en escritura (COW) en drm_gem_shmem_mmap permite a los usuarios llamar a mmap con Los indicadores PROT_WRITE y MAP_PRIVATE causan un p\u00e1nico en el kernel debido a BUG_ON en vmf_insert_pfn_prot: BUG_ON((vma-\u0026gt;vm_flags \u0026amp; VM_PFNMAP) \u0026amp;\u0026amp; is_cow_mapping(vma-\u0026gt;vm_flags)); Devuelva -EINVAL temprano si se detecta el mapeo COW. Este error afecta a todos los controladores drm que utilizan ayudantes shmem predeterminados. Se puede reproducir con este sencillo ejemplo: void *ptr = mmap(0, size, PROT_WRITE, MAP_PRIVATE, fd, mmap_offset); ptr[0] = 0;"
    }
  ],
  "id": "CVE-2024-39497",
  "lastModified": "2026-06-17T07:42:02.983",
  "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-39497",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T17:07:23.056270Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-07-12T13:15:12.320",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/03c71c42809ef4b17f5d874cdb2d3bf40e847b86"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/1b4a8b89bf6787090b56424d269bf84ba00c3263"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2219e5f97244b79c276751a1167615b9714db1b0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/39bc27bd688066a63e56f7f64ad34fae03fbe3b8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3ae63a8c1685e16958560ec08d30defdc5b9cca0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a508a102edf8735adc9bb73d37dd13c38d1a1b10"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/03c71c42809ef4b17f5d874cdb2d3bf40e847b86"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/1b4a8b89bf6787090b56424d269bf84ba00c3263"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/39bc27bd688066a63e56f7f64ad34fae03fbe3b8"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-617"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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