AZL-93680

In the Linux kernel, the following vulnerability has been resolved:

staging: rtl8723bs: fix OOB reads in rtwgetsecie(), rtwgetwapiie(), and rtwgetwps_attr()

Three IE/attribute parsing functions have missing bounds checks.

rtwgetsecie() and rtwgetwapiie() iterate over a raw IE buffer without verifying that the header bytes (tag + length) are within the remaining buffer before reading them. Additionally, rtwgetsecie() compares the 4-byte WPA OUI at cnt+2 without checking that at least 6 bytes remain, and rtwgetwapiie() compares a 4-byte WAPI OUI at cnt+6 without checking that at least 10 bytes remain.

rtwgetwpsattr() reads wpsie[0] and wpsie+2 unconditionally at entry, before verifying that wpsielen is large enough to contain the 6-byte WPS IE header (elementid + length + 4-byte OUI). Inside the attribute loop, getunalignedbe16() is called on attrptr and attr_ptr+2 without checking that 4 bytes remain in the buffer.

Add a cnt+2 bounds check before each loop body in rtwgetsecie() and rtwgetwapiie(), guard each multi-byte comparison with a minimum IE length requirement, add a wpsielen < 6 early return in rtwgetwpsattr(), and add a 4-byte bounds check in its inner loop.