Tracker / CVE-2026-31497
CVE-2026-31497
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: clamp SCO altsetting table indices btusb_work() maps the number of active SCO links to USB alternate settings through a three-entry lookup table when CVSD traffic uses transparent voice settings. The lookup currently indexes alts[] with data->sco_num - 1 without first constraining sco_num to the number of available table entries. While the table only defines alternate settings for up to three SCO links, data->sco_num comes from hci_conn_num() and is used directly. Cap the lookup to the last table entry before indexing it so the driver keeps selecting the highest supported alternate setting without reading past alts[].
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 5.11 → 5.15.203 |
| linux | linux_kernel · 5.16 → 6.1.168 |
| linux | linux_kernel · 5.8.1 → 5.10.253 |
| linux | linux_kernel · 6.13 → 6.18.21 |
| linux | linux_kernel · 6.19 → 6.19.11 |
| linux | linux_kernel · 6.2 → 6.6.131 |
| linux | linux_kernel · 6.7 → 6.12.80 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.