CVE-2023-52781: usb: config: fix iteration issue in 'usb_get_bos_descriptor()'

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-21 · updated 2026-06-17
Weakness: CWE-670

Description

In the Linux kernel, the following vulnerability has been resolved: usb: config: fix iteration issue in 'usb_get_bos_descriptor()' The BOS descriptor defines a root descriptor and is the base descriptor for accessing a family of related descriptors. Function 'usb_get_bos_descriptor()' encounters an iteration issue when skipping the 'USB_DT_DEVICE_CAPABILITY' descriptor type. This results in the same descriptor being read repeatedly. To address this issue, a 'goto' statement is introduced to ensure that the pointer and the amount read is updated correctly. This ensures that the function iterates to the next descriptor instead of reading the same descriptor repeatedly.

Affected products

Linux kernel: from 3.16.79 before 3.17; from 4.4.194 before 4.5; from 4.9.194 before 4.10; from 4.14.146 before 4.15; from 4.19.75 before 4.20; from 5.2.17 before 5.3 — fixed in 3.17, 4.10, 4.15, 4.20, 4.5, 5.10.203

How to fix

Upgrade to a fixed version: Linux kernel 3.17, 4.10, 4.15, 4.20. Check the vendor advisory for mitigations.

References

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