CVE-2026-23236 (GCVE-0-2026-23236)
Vulnerability from cvelistv5
Published
2026-03-04 14:36
Modified
2026-04-13 06:02
Severity ?
7.3 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: properly copy ioctl memory to kernelspace The UFX_IOCTL_REPORT_DAMAGE ioctl does not properly copy data from userspace to kernelspace, and instead directly references the memory, which can cause problems if invalid data is passed from userspace. Fix this all up by correctly copying the memory before accessing it within the kernel.
References
Impacted products
Vendor Product Version
Linux Linux Version: 3c8a63e22a0802fd56380f6ab305b419f18eb6f5
Version: 3c8a63e22a0802fd56380f6ab305b419f18eb6f5
Version: 3c8a63e22a0802fd56380f6ab305b419f18eb6f5
Version: 3c8a63e22a0802fd56380f6ab305b419f18eb6f5
Version: 3c8a63e22a0802fd56380f6ab305b419f18eb6f5
Version: 3c8a63e22a0802fd56380f6ab305b419f18eb6f5
Version: 3c8a63e22a0802fd56380f6ab305b419f18eb6f5
Version: 3c8a63e22a0802fd56380f6ab305b419f18eb6f5
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/smscufx.c"
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          "vendor": "Linux",
          "versions": [
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              "version": "3.2"
            },
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              "version": "0",
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            },
            {
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              "status": "unaffected",
              "version": "5.10.251",
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            },
            {
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              "status": "unaffected",
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              "version": "6.19.3",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: smscufx: properly copy ioctl memory to kernelspace\n\nThe UFX_IOCTL_REPORT_DAMAGE ioctl does not properly copy data from\nuserspace to kernelspace, and instead directly references the memory,\nwhich can cause problems if invalid data is passed from userspace.  Fix\nthis all up by correctly copying the memory before accessing it within\nthe kernel."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-13T06:02:53.775Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/061cfeb560aa3ddc174153dbe5be9d0b55eb7248"
        },
        {
          "url": "https://git.kernel.org/stable/c/6167af934f956d3ae1e06d61f45cd0d1004bbe1a"
        },
        {
          "url": "https://git.kernel.org/stable/c/a0321e6e58facb39fe191caa0e52ed9aab6a48fe"
        },
        {
          "url": "https://git.kernel.org/stable/c/0634e8d650993602fc5b389ff7ac525f6542e141"
        },
        {
          "url": "https://git.kernel.org/stable/c/52917e265aa5f848212f60fc50fc504d8ef12866"
        },
        {
          "url": "https://git.kernel.org/stable/c/1c008ad0f0d1c1523902b9cdb08e404129677bfc"
        },
        {
          "url": "https://git.kernel.org/stable/c/f1e91bd4efeae48b0f42caed7e8ce2e3a0d05b02"
        },
        {
          "url": "https://git.kernel.org/stable/c/120adae7b42faa641179270c067864544a50ab69"
        }
      ],
      "title": "fbdev: smscufx: properly copy ioctl memory to kernelspace",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23236",
    "datePublished": "2026-03-04T14:36:40.162Z",
    "dateReserved": "2026-01-13T15:37:45.988Z",
    "dateUpdated": "2026-04-13T06:02:53.775Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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