CVE-2026-63991

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> Bluetooth: 6lowpan: check skb_clone() return value in send_mcast_pkt()<br /> <br /> The skb_clone() function can return NULL if memory allocation fails.<br /> send_mcast_pkt() calls skb_clone() without checking the return value, which<br /> can lead to a NULL pointer dereference in send_pkt() when it dereferences<br /> skb-&gt;data.<br /> Add a NULL check after skb_clone() and skip the peer if the clone fails.