Threats Tagged 'cve-2025-40282'
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Threats Tagged 'cve-2025-40282'
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A high severity vulnerability in the Linux kernel's Bluetooth 6lowpan implementation was resolved. The issue involved missing resetting of the link-local header on the IPv6 receive path, which could cause kernel crashes when processing certain raw socket packets. The fix added the missing skb_reset_mac_header() call for uncompressed IPv6 packets to prevent crashes. This vulnerability affects the kernel's network packet handling in Bluetooth 6lowpan and could lead to denial of service due to kernel bugs. Join the discussion | GCVE Database | 12/07/2025, 00:30:56 UTC Added: 07/30/2026, 15:50:44 UTC |
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: 6lowpan: reset link-local header on ipv6 recv path Bluetooth 6lowpan.c netdev has header_ops, so it must set link-local header for RX skb, otherwise things crash, eg. with AF_PACKET SOCK_RAW Add missing skb_reset_mac_header() for uncompressed ipv6 RX path. For the compressed one, it is done in lowpan_header_decompress(). Log: (BlueZ 6lowpan-tester Client Recv Raw - Success) ------ kernel BUG at net/core/skbuff.c:212! Call Trace: <IRQ> ... packet_rcv (net/packet/af_packet.c:2152) ... <TASK> __local_bh_enable_ip (kernel/softirq.c:407) netif_rx (net/core/dev.c:5648) chan_recv_cb (net/bluetooth/6lowpan.c:294 net/bluetooth/6lowpan.c:359) ------ Join the discussion | GCVE Database | 12/06/2025, 22:15:00 UTC Added: 07/18/2026, 11:35:18 UTC |
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