CVE-2024-26889: Bluetooth: hci_core: Fix possible buffer overflow

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-04-17 · updated 2026-10-30
Weakness: CWE-120

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_core: Fix possible buffer overflow struct hci_dev_info has a fixed size name[8] field so in the event that hdev->name is bigger than that strcpy would attempt to write past its size, so this fixes this problem by switching to use strscpy.

Affected products

Debian Linux: 10.0 (and their updates)
Linux kernel: from 4.14.328 before 4.15; from 4.19.297 before 4.19.311; from 5.4.259 before 5.4.273; from 5.10.199 before 5.10.214; from 5.15.137 before 5.15.153; from 6.1.60 before 6.1.83 — fixed in 4.15, 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83
Linux: from 4.19.297 before 4.19.311; from 5.4.259 before 5.4.273; from 5.10.199 before 5.10.214; from 5.15.137 before 5.15.153; from 6.1.60 before 6.1.191; from 4.14.328 before 4.15 — fixed in 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.191, 4.15

How to fix

Upgrade to a fixed version: Linux kernel 4.15, 4.19.311, 5.4.273, 5.10.214; Linux 4.19.311, 5.4.273, 5.10.214, 5.15.153. Check the vendor advisory for mitigations.

References

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