| Sažetak |
In the Linux kernel, the following vulnerability has been resolved:
staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop
The loop in is_ap_in_tkip() iterates over IEs without verifying that
enough bytes remain before dereferencing the IE header or its payload:
- pIE->element_id and pIE->length are read without checking that
i + sizeof(*pIE) <= ie_length, so a truncated IE at the end of the
buffer causes an OOB read.
- For WLAN_EID_VENDOR_SPECIFIC the code compares pIE->data + 12,
which requires pIE->length >= 16. For WLAN_EID_RSN it compares
pIE->data + 8, requiring pIE->length >= 12. Neither requirement
is checked.
Add the missing IE header and payload bounds checks and guard each
data access with an explicit pIE->length minimum, matching the
pattern established in update_beacon_info(). |
