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.

Classification

CVE ID: CVE-2023-52781

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 17.81% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://git.kernel.org/stable/c/9ef94ec8e52eaf7b9abc5b5f8f5b911751112223
https://git.kernel.org/stable/c/64c27b7b2357ddb38b6afebaf46d5bff4d250702
https://git.kernel.org/stable/c/f89fef7710b2ba0f7a1e46594e530dcf2f77be91
https://git.kernel.org/stable/c/7c0244cc311a4038505b73682b7c8ceaa5c7a8c8
https://git.kernel.org/stable/c/974bba5c118f4c2baf00de0356e3e4f7928b4cbc

Timeline