{"id":"CVE-2026-90245","published":"2026-09-17T17:17:20.530","lastModified":"2026-09-17T17:17:20.530","description":"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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/2ac6e30a552e6f9932c21c865a5c69f40c8aef64","tags":[]},{"url":"https://git.kernel.org/stable/c/33e54e3e0b2ca959304e62c3d84f0ad49bbe1afe","tags":[]},{"url":"https://git.kernel.org/stable/c/413d763439ba68e5d547538e6b6c7de97d5818a5","tags":[]},{"url":"https://git.kernel.org/stable/c/7b5c7bc55e13e7f5ac7b1eaf5c6d690389ea5ee3","tags":[]},{"url":"https://git.kernel.org/stable/c/7bf36dc23bcf3496dec274a46ae0aaff4961ea03","tags":[]},{"url":"https://git.kernel.org/stable/c/a6decd4e72fc5846d3b268bd085a2089213fd5ee","tags":[]},{"url":"https://git.kernel.org/stable/c/d8c1a9579cbd8f4ac5cbd5a10f1afb5ee64adf30","tags":[]},{"url":"https://git.kernel.org/stable/c/e8d4e4cf388daeb49704f3de10b203034f28eb90","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}