CVE-2026-98602Bluetooth: bnep: fix out-of-bounds reads on short RX/TX frames and control fallthrough

Official description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: fix out-of-bounds reads on short RX/TX frames and control fallthrough Fix multiple out-of-bounds reads in Bluetooth BNEP frame processing: 1. In bnep_rx_frame() and bnep_ctrl_frame() (net/bluetooth/bnep/core.c), use pskb_may_pull() to verify the BNEP header, control type byte, filter count, and extension headers exist before reading them, and return 0 after handling BNEP_CONTROL instead of falling through to Ethernet frame submission when no extension headers follow. 2. In bnep_net_xmit() (net/bluetooth/bnep/netdev.c), verify skb->len >= ETH_HLEN with pskb_may_pull() before reading the 14-byte Ethernet header to prevent an out-of-bounds heap read and infoleak on short AF_PACKET TX frames.

Affected packages & fixed versions

Affected products (as reported)

References

• https://git.kernel.org/stable/c/7af80ad2cebfe2f1879d6a39a1aaa061d9c4e1ca
• https://git.kernel.org/stable/c/667aa703e11cdc237d169393bc6a5ea9acbb33c2
• https://git.kernel.org/stable/c/3e605ff5932afe0970c2beca66f2f1ba2babe4dd
• https://git.kernel.org/stable/c/035f9b1809861967e58ce652680d70ea1502058f
• https://git.kernel.org/stable/c/1e7aebc188f889b56c3aaeb6133ef6d77022c887
• https://git.kernel.org/stable/c/8f31031326994d1abfcc6ebb6927ef96e51fb9ff
• https://git.kernel.org/stable/c/ad0d2d4ada51321db787262ef343193c712b76b5
• https://git.kernel.org/stable/c/f0ca020cbb9bb7f3f4ea8ba1dfcf30a282aec91e