CVE-2026-31497
Bluetooth: btusb: clamp SCO altsetting table indices
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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[].
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.8
References 8
git.kernel.org
- stable/c/312c4450fe23014665c163f480edd5ad2e27bbb8
- stable/c/9dd13a8641de79bc1bc93da55cdd35259a002683
- stable/c/476c9262b430c38c6a701a3b8176a3f48689085b
- stable/c/6fba3c3d48c927e55611a0f5ea34da88138ed0ff
- stable/c/834cf890d2c3d29cbfa1ee2376c40469c28ec297
- stable/c/1019028eb124564cf7bca58a16f1df8a1ca30726
- stable/c/21c254202f9d78abe0fcd642a92966deb92bd226
- stable/c/129fa608b6ad08b8ab7178eeb2ec272c993aaccc