cve 2026 31497

About this tag
CVE-2026-31497 is a Linux kernel vulnerability in the Bluetooth USB driver (btusb) involving an array-bounds issue with SCO alternate settings. The flaw occurs when a lookup table is indexed using an unbounded value derived from the number of active SCO links, potentially leading to out-of-bounds access. The fix involves clamping the index before use. Microsoft's advisory aligns with the kernel.org description, and the upstream stable patch has been backported across multiple kernel versions. This tag covers discussions on the technical details of the bug, the patch, and its implications for Linux systems, including those running on Windows via WSL or virtualized environments.

  1. CVE-2026-31497: Linux btusb SCO Alternate Settings Array-Bounds Fix Explained

    CVE-2026-31497 is another reminder that the most interesting Linux kernel bugs are often the quiet ones. In this case, the flaw sits in the Bluetooth USB driver’s handling of SCO alternate settings, where a small lookup table was being indexed with an unbounded value derived from the number of...
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