CVE-2026-31497 (GCVE-0-2026-31497)
Vulnerability from cvelistv5 – Published: 2026-04-22 13:54 – Updated: 2026-04-22 13:54
VLAI?
Title
Bluetooth: btusb: clamp SCO altsetting table indices
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[].
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 312c4450fe23014665c163f480edd5ad2e27bbb8
(git)
Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 9dd13a8641de79bc1bc93da55cdd35259a002683 (git) Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 476c9262b430c38c6a701a3b8176a3f48689085b (git) Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 6fba3c3d48c927e55611a0f5ea34da88138ed0ff (git) Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 834cf890d2c3d29cbfa1ee2376c40469c28ec297 (git) Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 1019028eb124564cf7bca58a16f1df8a1ca30726 (git) Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 21c254202f9d78abe0fcd642a92966deb92bd226 (git) Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 129fa608b6ad08b8ab7178eeb2ec272c993aaccc (git) |
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|
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}
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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