Skip to main content
cve.nowby Sazabi
← All vulnerabilities
CVE-2026-90245

fbdev: kyro: Validate overlay viewport coordinates

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
None on Exploit-DB, Metasploit or GitHub

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in d8c1a9579cbd8f4ac5cbd5a10f1afb5ee64adf30; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 2ac6e30a552e6f9932c21c865a5c69f40c8aef64; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 413d763439ba68e5d547538e6b6c7de97d5818a5; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in e8d4e4cf388daeb49704f3de10b203034f28eb90; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in a6decd4e72fc5846d3b268bd085a2089213fd5ee; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 33e54e3e0b2ca959304e62c3d84f0ad49bbe1afe; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 7bf36dc23bcf3496dec274a46ae0aaff4961ea03; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 7b5c7bc55e13e7f5ac7b1eaf5c6d690389ea5ee3

  • Linux Linux

    2.6.12

  • KernelLinux

    From 2.6.12 · fixed in 5.10.270; From 5.11.0 · fixed in 5.15.221; From 5.16.0 · fixed in 6.1.188; From 6.2.0 · fixed in 6.6.157; From 6.7.0 · fixed in 6.12.110; From 6.13.0 · fixed in 6.18.52; From 6.19.0 · fixed in 7.2.6

References 8

git.kernel.org