CVE-2026-63991

Description

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

References

• https://git.kernel.org/stable/c/2061d080a013c0ec0a56162cd501fb36d2befc26
• https://git.kernel.org/stable/c/3c40d381ce04f9575a5d8b542898183c3b4b38dc
• https://git.kernel.org/stable/c/3d5d81d294ba09487c86bc4ba33dc4a4bec5d215
• https://git.kernel.org/stable/c/9903a04becf059e44cccf625e23689b7d4378384
• https://git.kernel.org/stable/c/9afcb5ea080af13aab37930da627db43bd277665