CVE-2026-63991

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux18722c247023035b9e2e2a08a887adec2a9a6e49 < 9afcb5ea080af13aab37930da627db43bd277665affected
LinuxLinux18722c247023035b9e2e2a08a887adec2a9a6e49 < 9903a04becf059e44cccf625e23689b7d4378384affected
LinuxLinux18722c247023035b9e2e2a08a887adec2a9a6e49 < d630c4b25f36e0e68461561e4c70957ec37fdeddaffected
LinuxLinux18722c247023035b9e2e2a08a887adec2a9a6e49 < b06203ac5f12929d79146bb9f063c2af1d679e63affected
LinuxLinux18722c247023035b9e2e2a08a887adec2a9a6e49 < 3d5d81d294ba09487c86bc4ba33dc4a4bec5d215affected
LinuxLinux18722c247023035b9e2e2a08a887adec2a9a6e49 < e673889a35a5e4c586d0fae67d8755ca4367d3e2affected
LinuxLinux18722c247023035b9e2e2a08a887adec2a9a6e49 < 2061d080a013c0ec0a56162cd501fb36d2befc26affected
LinuxLinux18722c247023035b9e2e2a08a887adec2a9a6e49 < 3c40d381ce04f9575a5d8b542898183c3b4b38dcaffected
LinuxLinux3.14affected
LinuxLinux0 < 3.14unaffected
LinuxLinux5.10.259 <= 5.10.*unaffected
LinuxLinux5.15.210 <= 5.15.*unaffected
LinuxLinux6.1.176 <= 6.1.*unaffected
LinuxLinux6.6.143 <= 6.6.*unaffected
LinuxLinux6.12.93 <= 6.12.*unaffected
LinuxLinux6.18.35 <= 6.18.*unaffected
LinuxLinux7.0.12 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References