Threats Tagged 'cve-2025-68255'

A stack buffer overflow vulnerability in the Linux kernel's rtl8723bs staging driver was fixed. The flaw involved improper handling of the Supported Rates Information Element (IE) length in Association Request frames, allowing an attacker to overflow a fixed-size 16-byte stack buffer. This could lead to kernel stack corruption triggered by malformed association requests. The fix clamps the IE length to the buffer size and corrects bounds checking for Extended Supported Rates to prevent a second overflow.

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing The Supported Rates IE length from an incoming Association Request frame was used directly as the memcpy() length when copying into a fixed-size 16-byte stack buffer (supportRate). A malicious station can advertise an IE length larger than 16 bytes, causing a stack buffer overflow. Clamp ie_len to the buffer size before copying the Supported Rates IE, and correct the bounds check when merging Extended Supported Rates to prevent a second potential overflow. This prevents kernel stack corruption triggered by malformed association requests.