CVE-2026-31497Bluetooth: btusb: clamp SCO altsetting table indices
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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[].
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- May 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 before 312c4450fe23014665c163f480edd5ad2e27bbb8; from baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 before 9dd13a8641de79bc1bc93da55cdd35259a002683; from baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 before 476c9262b430c38c6a701a3b8176a3f48689085b; from baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 before 6fba3c3d48c927e55611a0f5ea34da88138ed0ff; from baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 before 834cf890d2c3d29cbfa1ee2376c40469c28ec297; from baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 before 1019028eb124564cf7bca58a16f1df8a1ca30726; from baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 before 21c254202f9d78abe0fcd642a92966deb92bd226; from baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 before 129fa608b6ad08b8ab7178eeb2ec272c993aaccc | CNA record |
linux linux_kernel 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; from 6.19 before 6.19.11; 5.8; and 7 more ranges | NVD |
References
- https://git.kernel.org/stable/c/312c4450fe23014665c163f480edd5ad2e27bbb8patch
- https://git.kernel.org/stable/c/9dd13a8641de79bc1bc93da55cdd35259a002683patch
- https://git.kernel.org/stable/c/476c9262b430c38c6a701a3b8176a3f48689085bpatch
- https://git.kernel.org/stable/c/6fba3c3d48c927e55611a0f5ea34da88138ed0ffpatch
- https://git.kernel.org/stable/c/834cf890d2c3d29cbfa1ee2376c40469c28ec297patch
- https://git.kernel.org/stable/c/1019028eb124564cf7bca58a16f1df8a1ca30726patch
- https://git.kernel.org/stable/c/21c254202f9d78abe0fcd642a92966deb92bd226patch
- https://git.kernel.org/stable/c/129fa608b6ad08b8ab7178eeb2ec272c993aacccpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.