CVE-2026-90245 (GCVE-0-2026-90245)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:07 – Updated: 2026-10-19 09:00
VLAI
Title
fbdev: kyro: Validate overlay viewport coordinates
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7056 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d8c1a9579cbd8f4ac5cbd5a10f1afb5ee64adf30 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2ac6e30a552e6f9932c21c865a5c69f40c8aef64 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 413d763439ba68e5d547538e6b6c7de97d5818a5 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e8d4e4cf388daeb49704f3de10b203034f28eb90 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a6decd4e72fc5846d3b268bd085a2089213fd5ee (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 33e54e3e0b2ca959304e62c3d84f0ad49bbe1afe (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7bf36dc23bcf3496dec274a46ae0aaff4961ea03 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7b5c7bc55e13e7f5ac7b1eaf5c6d690389ea5ee3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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Show details on NVD website
To clipboard 

{
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              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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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": [
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          "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"
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        },
        {
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          "url": "https://git.kernel.org/stable/c/7b5c7bc55e13e7f5ac7b1eaf5c6d690389ea5ee3"
        }
      ],
      "title": "fbdev: kyro: Validate overlay viewport coordinates",
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    "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"
  },
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  "dataVersion": "5.2",
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      "cve": "CVE-2026-90245",
      "date": "2026-10-25",
      "epss": "0.00211",
      "percentile": "0.11182"
    },
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      "cve": "CVE-2026-90245",
      "id": "msrc_CVE-2026-90245",
      "initial_release_date": "2026-09-19T01:13:43.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "2",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "fbdev: kyro: Validate overlay viewport coordinates",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-90245.json",
      "version": "6"
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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."
          }
        ],
        "id": "CVE-2026-90245",
        "lastModified": "2026-10-19T09:19:15.010",
        "metrics": {},
        "published": "2026-09-17T17:17:20.530",
        "references": [
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/2ac6e30a552e6f9932c21c865a5c69f40c8aef64"
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            "url": "https://git.kernel.org/stable/c/e8d4e4cf388daeb49704f3de10b203034f28eb90"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-13T15:11:04+00:00",
      "cve": "CVE-2026-90245",
      "id": "CVE-2026-90245",
      "initial_release_date": "2026-09-17T00:00:00+00:00",
      "product_status:known_not_affected": "277",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: fbdev: kyro: Validate overlay viewport coordinates",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90245.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-10-20T00:41:20Z",
      "cve": "CVE-2026-90245",
      "id": "CVE-2026-90245",
      "initial_release_date": "2026-09-22T16:29:51Z",
      "product_status:known_affected": "269",
      "product_status:known_not_affected": "79",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-90245",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-90245.json",
      "version": "4"
    }
  }
}



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    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.