CVE-2026-90245fbdev: kyro: Validate overlay viewport coordinates
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d8c1a9579cbd8f4ac5cbd5a10f1afb5ee64adf30; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 2ac6e30a552e6f9932c21c865a5c69f40c8aef64; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 413d763439ba68e5d547538e6b6c7de97d5818a5; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e8d4e4cf388daeb49704f3de10b203034f28eb90; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a6decd4e72fc5846d3b268bd085a2089213fd5ee; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 33e54e3e0b2ca959304e62c3d84f0ad49bbe1afe; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 7bf36dc23bcf3496dec274a46ae0aaff4961ea03; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 7b5c7bc55e13e7f5ac7b1eaf5c6d690389ea5ee3 | CNA record |
References
- https://git.kernel.org/stable/c/d8c1a9579cbd8f4ac5cbd5a10f1afb5ee64adf30
- https://git.kernel.org/stable/c/2ac6e30a552e6f9932c21c865a5c69f40c8aef64
- https://git.kernel.org/stable/c/413d763439ba68e5d547538e6b6c7de97d5818a5
- https://git.kernel.org/stable/c/e8d4e4cf388daeb49704f3de10b203034f28eb90
- https://git.kernel.org/stable/c/a6decd4e72fc5846d3b268bd085a2089213fd5ee
- https://git.kernel.org/stable/c/33e54e3e0b2ca959304e62c3d84f0ad49bbe1afe
- https://git.kernel.org/stable/c/7bf36dc23bcf3496dec274a46ae0aaff4961ea03
- https://git.kernel.org/stable/c/7b5c7bc55e13e7f5ac7b1eaf5c6d690389ea5ee3
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.