GHSA-74PP-FW2V-5W87
Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-17 18:31In 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.
{
"affected": [],
"aliases": [
"CVE-2026-90245"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-17T17:17:20Z",
"severity": null
},
"details": "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": "GHSA-74pp-fw2v-5w87",
"modified": "2026-09-17T18:31:57Z",
"published": "2026-09-17T18:31:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90245"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2ac6e30a552e6f9932c21c865a5c69f40c8aef64"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/33e54e3e0b2ca959304e62c3d84f0ad49bbe1afe"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/413d763439ba68e5d547538e6b6c7de97d5818a5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7b5c7bc55e13e7f5ac7b1eaf5c6d690389ea5ee3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7bf36dc23bcf3496dec274a46ae0aaff4961ea03"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a6decd4e72fc5846d3b268bd085a2089213fd5ee"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d8c1a9579cbd8f4ac5cbd5a10f1afb5ee64adf30"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e8d4e4cf388daeb49704f3de10b203034f28eb90"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Confirmed: The vulnerability has been validated from an analyst's perspective.
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- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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