CVE-2026-90245
Last modified
CVE-2026-90245 is a vulnerability of currently unknown severity. 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.
Description
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.
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d8c1a9579cbd8f4ac5cbd5a10f1afb5ee64adf30; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2ac6e30a552e6f9932c21c865a5c69f40c8aef64; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 413d763439ba68e5d547538e6b6c7de97d5818a5; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < e8d4e4cf388daeb49704f3de10b203034f28eb90; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a6decd4e72fc5846d3b268bd085a2089213fd5ee; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 33e54e3e0b2ca959304e62c3d84f0ad49bbe1afe; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 7bf36dc23bcf3496dec274a46ae0aaff4961ea03; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 7b5c7bc55e13e7f5ac7b1eaf5c6d690389ea5ee3 |
| Linux | Linux | 2.6.12 |
References
Timeline
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