CVE-2025-68362

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> wifi: rtl818x: rtl8187: Fix potential buffer underflow in rtl8187_rx_cb()<br /> <br /> The rtl8187_rx_cb() calculates the rx descriptor header address<br /> by subtracting its size from the skb tail pointer.<br /> However, it does not validate if the received packet<br /> (skb-&gt;len from urb-&gt;actual_length) is large enough to contain this<br /> header.<br /> <br /> If a truncated packet is received, this will lead to a buffer<br /> underflow, reading memory before the start of the skb data area,<br /> and causing a kernel panic.<br /> <br /> Add length checks for both rtl8187 and rtl8187b descriptor headers<br /> before attempting to access them, dropping the packet cleanly if the<br /> check fails.