CVE-2026-31497
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: clamp SCO altsetting table indices btusb_work() maps the number of active…
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.8.1 before 5.10.253 from 5.11 before 5.15.203 from 5.16 before 6.1.168 from 6.2 before 6.6.131 from 6.7 before 6.12.80 from 6.13 before 6.18.21 |
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/1019028eb124564cf7bca58a16f1df8a1ca30726
- https://git.kernel.org/stable/c/129fa608b6ad08b8ab7178eeb2ec272c993aaccc
- https://git.kernel.org/stable/c/21c254202f9d78abe0fcd642a92966deb92bd226
- https://git.kernel.org/stable/c/312c4450fe23014665c163f480edd5ad2e27bbb8
- https://git.kernel.org/stable/c/476c9262b430c38c6a701a3b8176a3f48689085b
- https://git.kernel.org/stable/c/6fba3c3d48c927e55611a0f5ea34da88138ed0ff
- https://git.kernel.org/stable/c/834cf890d2c3d29cbfa1ee2376c40469c28ec297
- https://git.kernel.org/stable/c/9dd13a8641de79bc1bc93da55cdd35259a002683