Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: fix crash in set_mesh_sync and set_mesh_complete There is a BUG: KASAN: stack-out-of-bounds in set_mesh_sync due to memcpy from badly declared on-stack flexible array. Another crash is in set_mesh_complete() due to double list_del via mgmt_pending_valid + mgmt_pending_remove. Use DEFINE_FLEX to declare the flexible array right, and don't memcpy outside bounds. As mgmt_pending_valid removes the cmd from list, use mgmt_pending_free, and also report status on error.

References 3

• git.kernel.org https://git.kernel.org/stable/c/1c9aca1787e8395a2c59fef20e914467958969c5
• git.kernel.org https://git.kernel.org/stable/c/5c19daa93d9af29f1f46251b47e1ea66bcc8d679
• git.kernel.org https://git.kernel.org/stable/c/e8785404de06a69d89dcdd1e9a0b6ea42dc6d327

Remediation