CVE-2026-90245 (GCVE-0-2026-90245)
Vulnerability from cvelistv5
Published
2026-09-17 16:07
Modified
2026-10-19 09:00
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: fbdev: kyro: Validate overlay viewport coordinates The overlay viewport end coordinates are computed from the viewport origin and dimensions using 32-bit unsigned arithmetic. Large input values can cause these calculations to wrap around before the resulting coordinates are passed to SetOverlayViewPort(). SetOverlayViewPort() packs the viewport coordinates into 16-bit register fields. The X coordinates are additionally adjusted by +2 and +1 before being written. Validate the coordinate calculations for 32-bit wraparound and ensure that the adjusted coordinates fit within their 16-bit register fields before calling SetOverlayViewPort(). Found by Linux Verification Center (linuxtesting.org) with SVACE.
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/kyro/fbdev.c"
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "2.6.12"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.10.270",
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            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
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              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.6.157",
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              "version": "7.2.6",
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              "version": "7.3",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: kyro: Validate overlay viewport coordinates\n\nThe overlay viewport end coordinates are computed from the viewport\norigin and dimensions using 32-bit unsigned arithmetic. Large input\nvalues can cause these calculations to wrap around before the resulting\ncoordinates are passed to SetOverlayViewPort().\n\nSetOverlayViewPort() packs the viewport coordinates into 16-bit\nregister fields. The X coordinates are additionally adjusted by +2\nand +1 before being written. Validate the coordinate calculations\nfor 32-bit wraparound and ensure that the adjusted coordinates fit\nwithin their 16-bit register fields before calling\nSetOverlayViewPort().\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:00:21.124Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d8c1a9579cbd8f4ac5cbd5a10f1afb5ee64adf30"
        },
        {
          "url": "https://git.kernel.org/stable/c/2ac6e30a552e6f9932c21c865a5c69f40c8aef64"
        },
        {
          "url": "https://git.kernel.org/stable/c/413d763439ba68e5d547538e6b6c7de97d5818a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/e8d4e4cf388daeb49704f3de10b203034f28eb90"
        },
        {
          "url": "https://git.kernel.org/stable/c/a6decd4e72fc5846d3b268bd085a2089213fd5ee"
        },
        {
          "url": "https://git.kernel.org/stable/c/33e54e3e0b2ca959304e62c3d84f0ad49bbe1afe"
        },
        {
          "url": "https://git.kernel.org/stable/c/7bf36dc23bcf3496dec274a46ae0aaff4961ea03"
        },
        {
          "url": "https://git.kernel.org/stable/c/7b5c7bc55e13e7f5ac7b1eaf5c6d690389ea5ee3"
        }
      ],
      "title": "fbdev: kyro: Validate overlay viewport coordinates",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90245",
    "datePublished": "2026-09-17T16:07:47.765Z",
    "dateReserved": "2026-09-11T19:38:34.795Z",
    "dateUpdated": "2026-10-19T09:00:21.124Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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