staging: rtl8723bs: fix OOB reads in rtw_get_wps_ie()

Summary

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in rtw_get_wps_ie() rtw_get_wps_ie() iterates over IE data from network frames without validating that the IE header and payload fit within the remaining buffer before reading them. Specifically: • in_ie[cnt + 1] is read without checking cnt + 1 < in_len • memcmp(&in_ie[cnt + 2], ...) accesses cnt + 2 without bounds check • in_ie[cnt + 1] is used as length without verifying payload fits Add bounds checks at the top of the loop body to break early if fewer than 2 bytes remain for the IE header, or if the declared payload extends past the end of the buffer. Also require at least 4 bytes of payload before comparing the WPS OUI.

Timeline

1. Aug 10, 2026, 12:00 PM UTCCVE published
2. Aug 19, 2026, 4:31 PM UTCRecord last updated

Affected versions

• Linux Linux

  Version range not reported

• Linux Linux

  4.12

References 7