CVE-2026-31497
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-04-22
Modified: 2026-11-11
First seen: 2026-11-05
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
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 Software (18)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 < 312c4450fe23014665c163f480edd5ad2e27bbb8 |
| Linux | Linux | baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 < 9dd13a8641de79bc1bc93da55cdd35259a002683 |
| Linux | Linux | baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 < 476c9262b430c38c6a701a3b8176a3f48689085b |
| Linux | Linux | baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 < 6fba3c3d48c927e55611a0f5ea34da88138ed0ff |
| Linux | Linux | baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 < 834cf890d2c3d29cbfa1ee2376c40469c28ec297 |
| Linux | Linux | baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 < 1019028eb124564cf7bca58a16f1df8a1ca30726 |
| Linux | Linux | baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 < 21c254202f9d78abe0fcd642a92966deb92bd226 |
| Linux | Linux | baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 < 129fa608b6ad08b8ab7178eeb2ec272c993aaccc |
| Linux | Linux | 5.8 |
| linux | linux_kernel | 5.8.1 – 5.10.253 |
| linux | linux_kernel | 5.8 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |